Finding the Third Proportional to 12,909 and 18,076

Step by Step Solution

1. Step 1: Write the proportion equation
   12,909 : 18,076 = 18,076 : x
2. Step 2: Convert to fraction form
   12,909/18,076 = 18,076/x
3. Step 3: Cross multiply
   12,909x = 18,076 × 18,076
4. Step 4: Simplify right side
   12,909x = 326,741,776
5. Step 5: Solve for x
   x = 326,741,776/12,909
6. Step 6: Final answer
   x = 25,311.16