Finding the Third Proportional to 31,383,564 and 67,721,406

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,564 : 67,721,406 = 67,721,406 : x
2. Step 2: Convert to fraction form
   31,383,564/67,721,406 = 67,721,406/x
3. Step 3: Cross multiply
   31,383,564x = 67,721,406 × 67,721,406
4. Step 4: Simplify right side
   31,383,564x = 4,586,188,830,616,836
5. Step 5: Solve for x
   x = 4,586,188,830,616,836/31,383,564
6. Step 6: Final answer
   x = 146,133,461.15