Finding the Third Proportional to 635,819,656 and 858,778,684

Step by Step Solution

1. Step 1: Write the proportion equation
   635,819,656 : 858,778,684 = 858,778,684 : x
2. Step 2: Convert to fraction form
   635,819,656/858,778,684 = 858,778,684/x
3. Step 3: Cross multiply
   635,819,656x = 858,778,684 × 858,778,684
4. Step 4: Simplify right side
   635,819,656x = 737,500,828,092,771,840
5. Step 5: Solve for x
   x = 737,500,828,092,771,840/635,819,656
6. Step 6: Final answer
   x = 1,159,921,404.02