Finding the Third Proportional to 31,383,576 and 67,721,418

Step by Step Solution

1. Step 1: Write the proportion equation
   31,383,576 : 67,721,418 = 67,721,418 : x
2. Step 2: Convert to fraction form
   31,383,576/67,721,418 = 67,721,418/x
3. Step 3: Cross multiply
   31,383,576x = 67,721,418 × 67,721,418
4. Step 4: Simplify right side
   31,383,576x = 4,586,190,455,930,724
5. Step 5: Solve for x
   x = 4,586,190,455,930,724/31,383,576
6. Step 6: Final answer
   x = 146,133,457.06