Finding the Third Proportional to 21,622,168 and 29,123,580

Step by Step Solution

1. Step 1: Write the proportion equation
   21,622,168 : 29,123,580 = 29,123,580 : x
2. Step 2: Convert to fraction form
   21,622,168/29,123,580 = 29,123,580/x
3. Step 3: Cross multiply
   21,622,168x = 29,123,580 × 29,123,580
4. Step 4: Simplify right side
   21,622,168x = 848,182,912,016,400
5. Step 5: Solve for x
   x = 848,182,912,016,400/21,622,168
6. Step 6: Final answer
   x = 39,227,468.40