Finding the Third Proportional to 11,499.13 and 18,000.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.13 : 18,000.38 = 18,000.38 : x
2. Step 2: Convert to fraction form
   11,499.13/18,000.38 = 18,000.38/x
3. Step 3: Cross multiply
   11,499.13x = 18,000.38 × 18,000.38
4. Step 4: Simplify right side
   11,499.13x = 324,013,500.14
5. Step 5: Solve for x
   x = 324,013,500.14/11,499.13
6. Step 6: Final answer
   x = 28,177.23