Finding the Third Proportional to 12,416 and 25,399

Step by Step Solution

1. Step 1: Write the proportion equation
   12,416 : 25,399 = 25,399 : x
2. Step 2: Convert to fraction form
   12,416/25,399 = 25,399/x
3. Step 3: Cross multiply
   12,416x = 25,399 × 25,399
4. Step 4: Simplify right side
   12,416x = 645,109,201
5. Step 5: Solve for x
   x = 645,109,201/12,416
6. Step 6: Final answer
   x = 51,957.89