Finding the Third Proportional to 31,383,552 and 67,721,382

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,552 : 67,721,382 = 67,721,382 : x
2. Step 2: Convert to fraction form
   31,383,552/67,721,382 = 67,721,382/x
3. Step 3: Cross multiply
   31,383,552x = 67,721,382 × 67,721,382
4. Step 4: Simplify right side
   31,383,552x = 4,586,185,579,989,924
5. Step 5: Solve for x
   x = 4,586,185,579,989,924/31,383,552
6. Step 6: Final answer
   x = 146,133,413.45