Finding the Third Proportional to 12,150 and 18,388.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150 : 18,388.13 = 18,388.13 : x
2. Step 2: Convert to fraction form
   12,150/18,388.13 = 18,388.13/x
3. Step 3: Cross multiply
   12,150x = 18,388.13 × 18,388.13
4. Step 4: Simplify right side
   12,150x = 338,123,141.02
5. Step 5: Solve for x
   x = 338,123,141.02/12,150
6. Step 6: Final answer
   x = 27,829.07