Finding the Third Proportional to 31,510,738 and 68,399,336

Step by Step Solution

1. Step 1: Write the proportion equation
   31,510,738 : 68,399,336 = 68,399,336 : x
2. Step 2: Convert to fraction form
   31,510,738/68,399,336 = 68,399,336/x
3. Step 3: Cross multiply
   31,510,738x = 68,399,336 × 68,399,336
4. Step 4: Simplify right side
   31,510,738x = 4,678,469,165,240,896
5. Step 5: Solve for x
   x = 4,678,469,165,240,896/31,510,738
6. Step 6: Final answer
   x = 148,472,218.11