Finding the Third Proportional to 8,443 and 12,617

Step by Step Solution

1. Step 1: Write the proportion equation
   8,443 : 12,617 = 12,617 : x
2. Step 2: Convert to fraction form
   8,443/12,617 = 12,617/x
3. Step 3: Cross multiply
   8,443x = 12,617 × 12,617
4. Step 4: Simplify right side
   8,443x = 159,188,689
5. Step 5: Solve for x
   x = 159,188,689/8,443
6. Step 6: Final answer
   x = 18,854.52