Finding the Third Proportional to 8,499 and 12,243

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499 : 12,243 = 12,243 : x
2. Step 2: Convert to fraction form
   8,499/12,243 = 12,243/x
3. Step 3: Cross multiply
   8,499x = 12,243 × 12,243
4. Step 4: Simplify right side
   8,499x = 149,891,049
5. Step 5: Solve for x
   x = 149,891,049/8,499
6. Step 6: Final answer
   x = 17,636.32