Finding the Third Proportional to 31,383,704 and 67,721,688

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,704 : 67,721,688 = 67,721,688 : x
2. Step 2: Convert to fraction form
   31,383,704/67,721,688 = 67,721,688/x
3. Step 3: Cross multiply
   31,383,704x = 67,721,688 × 67,721,688
4. Step 4: Simplify right side
   31,383,704x = 4,586,227,025,569,344
5. Step 5: Solve for x
   x = 4,586,227,025,569,344/31,383,704
6. Step 6: Final answer
   x = 146,134,026.29