Finding the Third Proportional to 8,439 and 10,167

Step by Step Solution

1. Step 1: Write the proportion equation
   8,439 : 10,167 = 10,167 : x
2. Step 2: Convert to fraction form
   8,439/10,167 = 10,167/x
3. Step 3: Cross multiply
   8,439x = 10,167 × 10,167
4. Step 4: Simplify right side
   8,439x = 103,367,889
5. Step 5: Solve for x
   x = 103,367,889/8,439
6. Step 6: Final answer
   x = 12,248.83