Finding the Third Proportional to 11,915 and 25,414

Step by Step Solution

1. Step 1: Write the proportion equation
   11,915 : 25,414 = 25,414 : x
2. Step 2: Convert to fraction form
   11,915/25,414 = 25,414/x
3. Step 3: Cross multiply
   11,915x = 25,414 × 25,414
4. Step 4: Simplify right side
   11,915x = 645,871,396
5. Step 5: Solve for x
   x = 645,871,396/11,915
6. Step 6: Final answer
   x = 54,206.58