Finding the Third Proportional to 11,700 and 12,876

Step by Step Solution

1. Step 1: Write the proportion equation
   11,700 : 12,876 = 12,876 : x
2. Step 2: Convert to fraction form
   11,700/12,876 = 12,876/x
3. Step 3: Cross multiply
   11,700x = 12,876 × 12,876
4. Step 4: Simplify right side
   11,700x = 165,791,376
5. Step 5: Solve for x
   x = 165,791,376/11,700
6. Step 6: Final answer
   x = 14,170.20