Finding the Third Proportional to 31,056,415 and 67,288,598

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056,415 : 67,288,598 = 67,288,598 : x
2. Step 2: Convert to fraction form
   31,056,415/67,288,598 = 67,288,598/x
3. Step 3: Cross multiply
   31,056,415x = 67,288,598 × 67,288,598
4. Step 4: Simplify right side
   31,056,415x = 4,527,755,420,805,604
5. Step 5: Solve for x
   x = 4,527,755,420,805,604/31,056,415
6. Step 6: Final answer
   x = 145,791,309.81