Finding the Third Proportional to 8,287 and 12,468

Step by Step Solution

1. Step 1: Write the proportion equation
   8,287 : 12,468 = 12,468 : x
2. Step 2: Convert to fraction form
   8,287/12,468 = 12,468/x
3. Step 3: Cross multiply
   8,287x = 12,468 × 12,468
4. Step 4: Simplify right side
   8,287x = 155,451,024
5. Step 5: Solve for x
   x = 155,451,024/8,287
6. Step 6: Final answer
   x = 18,758.42