Finding the Third Proportional to 8,251 and 12,882

Step by Step Solution

1. Step 1: Write the proportion equation
   8,251 : 12,882 = 12,882 : x
2. Step 2: Convert to fraction form
   8,251/12,882 = 12,882/x
3. Step 3: Cross multiply
   8,251x = 12,882 × 12,882
4. Step 4: Simplify right side
   8,251x = 165,945,924
5. Step 5: Solve for x
   x = 165,945,924/8,251
6. Step 6: Final answer
   x = 20,112.22