Finding the Third Proportional to 57,468.38 and 86,280.19

Step by Step Solution

1. Step 1: Write the proportion equation
   57,468.38 : 86,280.19 = 86,280.19 : x
2. Step 2: Convert to fraction form
   57,468.38/86,280.19 = 86,280.19/x
3. Step 3: Cross multiply
   57,468.38x = 86,280.19 × 86,280.19
4. Step 4: Simplify right side
   57,468.38x = 7,444,270,755.04
5. Step 5: Solve for x
   x = 7,444,270,755.04/57,468.38
6. Step 6: Final answer
   x = 129,536.82