Finding the Third Proportional to 687,502,813.50 and 1,090,422,137.25

Step by Step Solution

1. Step 1: Write the proportion equation
   687,502,813.50 : 1,090,422,137.25 = 1,090,422,137.25 : x
2. Step 2: Convert to fraction form
   687,502,813.50/1,090,422,137.25 = 1,090,422,137.25/x
3. Step 3: Cross multiply
   687,502,813.50x = 1,090,422,137.25 × 1,090,422,137.25
4. Step 4: Simplify right side
   687,502,813.50x = 1,189,020,437,404,857,856
5. Step 5: Solve for x
   x = 1,189,020,437,404,857,856/687,502,813.50
6. Step 6: Final answer
   x = 1,729,477,194.94