Finding the Third Proportional to 12,876 and 17,130

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876 : 17,130 = 17,130 : x
2. Step 2: Convert to fraction form
   12,876/17,130 = 17,130/x
3. Step 3: Cross multiply
   12,876x = 17,130 × 17,130
4. Step 4: Simplify right side
   12,876x = 293,436,900
5. Step 5: Solve for x
   x = 293,436,900/12,876
6. Step 6: Final answer
   x = 22,789.45