Finding the Third Proportional to 639,497,443 and 1,391,602,462.50

Step by Step Solution

1. Step 1: Write the proportion equation
   639,497,443 : 1,391,602,462.50 = 1,391,602,462.50 : x
2. Step 2: Convert to fraction form
   639,497,443/1,391,602,462.50 = 1,391,602,462.50/x
3. Step 3: Cross multiply
   639,497,443x = 1,391,602,462.50 × 1,391,602,462.50
4. Step 4: Simplify right side
   639,497,443x = 1,936,557,413,636,064,000
5. Step 5: Solve for x
   x = 1,936,557,413,636,064,000/639,497,443
6. Step 6: Final answer
   x = 3,028,248,877.04