Finding the Third Proportional to 639,153,061.50 and 1,375,382,679

Step by Step Solution

1. Step 1: Write the proportion equation
   639,153,061.50 : 1,375,382,679 = 1,375,382,679 : x
2. Step 2: Convert to fraction form
   639,153,061.50/1,375,382,679 = 1,375,382,679/x
3. Step 3: Cross multiply
   639,153,061.50x = 1,375,382,679 × 1,375,382,679
4. Step 4: Simplify right side
   639,153,061.50x = 1,891,677,513,693,217,024
5. Step 5: Solve for x
   x = 1,891,677,513,693,217,024/639,153,061.50
6. Step 6: Final answer
   x = 2,959,662,759.42