Finding the Third Proportional to 12,716 and 15,308

Step by Step Solution

1. Step 1: Write the proportion equation
   12,716 : 15,308 = 15,308 : x
2. Step 2: Convert to fraction form
   12,716/15,308 = 15,308/x
3. Step 3: Cross multiply
   12,716x = 15,308 × 15,308
4. Step 4: Simplify right side
   12,716x = 234,334,864
5. Step 5: Solve for x
   x = 234,334,864/12,716
6. Step 6: Final answer
   x = 18,428.35