I was flying N441EP, a Cessna 441 owned by TK Mining, Delta Colorado. Departing MMHO I received a call from Mazatlan Center asking if I could help. An aircraft had gone down over by Puerto Penasco and there was no other aircraft in the area to find him. (Our other pilot, Ron, preceded me by about 45 minutes and had heard the distress call but was already in the US before he could help.) The aircraft was about 75 miles off my course and I agreed to go look. I proceeded to the coordinates I was given and found no airplane. I was able to talk to the downed pilot who had been flying a Cirrus SR22 N1645S. He could not hear my aircraft overhead so I asked him for new coordinates which he provided from his cel phone. (Smart Move !) This produced a location about 8 miles away. Once I was over that location he saw me and I was able to see him. The Cirrus is a 4 place airplane with a brightly colored parachute which he had used. I asked his status and he indicated that he was unhurt. He seemed quite calm and collected. I asked if he was ok with spending the night as it was sunset at this time. He indicated that he did not wish to but that he had a small amount of water. I took his father’s phone number so I could call him and tell him that his son was down but ok. I returned to my course and as I climbed out, I made contact with Hermosillo Approach again and informed them of the CORRECT coordinates, pilot’s status and father’s phone number. I was informed by Tucson approach that a helicopter had been dispatched earlier with the old coordinates and was unable to find him. They would locate him the next morning with the coordinates that I provided. This was about 40 minutes additional on the N441EP for a very good cause! (Thanks TK!) I was fortunate to be in there at the right time, acquire and relay information. Great job Ivan. You stayed cool and made good decisions! God Bless! Tracy