Finding the Third Proportional to 31,383,531 and 67,721,346

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,531 : 67,721,346 = 67,721,346 : x
2. Step 2: Convert to fraction form
   31,383,531/67,721,346 = 67,721,346/x
3. Step 3: Cross multiply
   31,383,531x = 67,721,346 × 67,721,346
4. Step 4: Simplify right side
   31,383,531x = 4,586,180,704,051,716
5. Step 5: Solve for x
   x = 4,586,180,704,051,716/31,383,531
6. Step 6: Final answer
   x = 146,133,355.87