Step 1 : Introduction to the question "Who is the longest-living President of the United States?"
...s old. Behind him is Ronald Reagan, who died in 2004 at 93 years and 120 days old. Jimmy Carter, the second-oldest living president who was born on Oct. 1, 1924, is a little more than 100 days behind Bush. George H.W. Bush was 64 years old when he entered office in 1989
