Finding the Third Proportional to 12,240 and 25,398

Step by Step Solution

1. Step 1: Write the proportion equation
   12,240 : 25,398 = 25,398 : x
2. Step 2: Convert to fraction form
   12,240/25,398 = 25,398/x
3. Step 3: Cross multiply
   12,240x = 25,398 × 25,398
4. Step 4: Simplify right side
   12,240x = 645,058,404
5. Step 5: Solve for x
   x = 645,058,404/12,240
6. Step 6: Final answer
   x = 52,700.85