Finding the Third Proportional to 11,866.18 and 25,392.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,866.18 : 25,392.55 = 25,392.55 : x
2. Step 2: Convert to fraction form
   11,866.18/25,392.55 = 25,392.55/x
3. Step 3: Cross multiply
   11,866.18x = 25,392.55 × 25,392.55
4. Step 4: Simplify right side
   11,866.18x = 644,781,635.18
5. Step 5: Solve for x
   x = 644,781,635.18/11,866.18
6. Step 6: Final answer
   x = 54,337.74