Finding the Third Proportional to 635,819,654.25 and 858,778,681.50

Step by Step Solution

1. Step 1: Write the proportion equation
   635,819,654.25 : 858,778,681.50 = 858,778,681.50 : x
2. Step 2: Convert to fraction form
   635,819,654.25/858,778,681.50 = 858,778,681.50/x
3. Step 3: Cross multiply
   635,819,654.25x = 858,778,681.50 × 858,778,681.50
4. Step 4: Simplify right side
   635,819,654.25x = 737,500,823,798,878,464
5. Step 5: Solve for x
   x = 737,500,823,798,878,464/635,819,654.25
6. Step 6: Final answer
   x = 1,159,921,400.46