Finding the Third Proportional to 31,665,640 and 69,161,336

Step by Step Solution

1. Step 1: Write the proportion equation
   31,665,640 : 69,161,336 = 69,161,336 : x
2. Step 2: Convert to fraction form
   31,665,640/69,161,336 = 69,161,336/x
3. Step 3: Cross multiply
   31,665,640x = 69,161,336 × 69,161,336
4. Step 4: Simplify right side
   31,665,640x = 4,783,290,397,304,896
5. Step 5: Solve for x
   x = 4,783,290,397,304,896/31,665,640
6. Step 6: Final answer
   x = 151,056,173.10