Finding the Third Proportional to 615,791.25 and 980,603.38

Step by Step Solution

1. Step 1: Write the proportion equation
   615,791.25 : 980,603.38 = 980,603.38 : x
2. Step 2: Convert to fraction form
   615,791.25/980,603.38 = 980,603.38/x
3. Step 3: Cross multiply
   615,791.25x = 980,603.38 × 980,603.38
4. Step 4: Simplify right side
   615,791.25x = 961,582,979,061.39
5. Step 5: Solve for x
   x = 961,582,979,061.39/615,791.25
6. Step 6: Final answer
   x = 1,561,540.50