Finding the Third Proportional to 10,856 and 16,872

Step by Step Solution

1. Step 1: Write the proportion equation
   10,856 : 16,872 = 16,872 : x
2. Step 2: Convert to fraction form
   10,856/16,872 = 16,872/x
3. Step 3: Cross multiply
   10,856x = 16,872 × 16,872
4. Step 4: Simplify right side
   10,856x = 284,664,384
5. Step 5: Solve for x
   x = 284,664,384/10,856
6. Step 6: Final answer
   x = 26,221.85