Finding the Third Proportional to 31,383,624 and 67,721,520

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,624 : 67,721,520 = 67,721,520 : x
2. Step 2: Convert to fraction form
   31,383,624/67,721,520 = 67,721,520/x
3. Step 3: Cross multiply
   31,383,624x = 67,721,520 × 67,721,520
4. Step 4: Simplify right side
   31,383,624x = 4,586,204,271,110,400
5. Step 5: Solve for x
   x = 4,586,204,271,110,400/31,383,624
6. Step 6: Final answer
   x = 146,133,673.76