Finding the Third Proportional to 12,666.38 and 20,158.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,666.38 : 20,158.88 = 20,158.88 : x
2. Step 2: Convert to fraction form
   12,666.38/20,158.88 = 20,158.88/x
3. Step 3: Cross multiply
   12,666.38x = 20,158.88 × 20,158.88
4. Step 4: Simplify right side
   12,666.38x = 406,380,241.27
5. Step 5: Solve for x
   x = 406,380,241.27/12,666.38
6. Step 6: Final answer
   x = 32,083.39