Finding the Third Proportional to 31,383,681 and 67,721,634

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,681 : 67,721,634 = 67,721,634 : x
2. Step 2: Convert to fraction form
   31,383,681/67,721,634 = 67,721,634/x
3. Step 3: Cross multiply
   31,383,681x = 67,721,634 × 67,721,634
4. Step 4: Simplify right side
   31,383,681x = 4,586,219,711,629,956
5. Step 5: Solve for x
   x = 4,586,219,711,629,956/31,383,681
6. Step 6: Final answer
   x = 146,133,900.34