Finding the Third Proportional to 25,359.38 and 39,421.31

Step by Step Solution

1. Step 1: Write the proportion equation
   25,359.38 : 39,421.31 = 39,421.31 : x
2. Step 2: Convert to fraction form
   25,359.38/39,421.31 = 39,421.31/x
3. Step 3: Cross multiply
   25,359.38x = 39,421.31 × 39,421.31
4. Step 4: Simplify right side
   25,359.38x = 1,554,039,879.22
5. Step 5: Solve for x
   x = 1,554,039,879.22/25,359.38
6. Step 6: Final answer
   x = 61,280.69