Finding the Third Proportional to 11,981.25 and 18,390.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,981.25 : 18,390.38 = 18,390.38 : x
2. Step 2: Convert to fraction form
   11,981.25/18,390.38 = 18,390.38/x
3. Step 3: Cross multiply
   11,981.25x = 18,390.38 × 18,390.38
4. Step 4: Simplify right side
   11,981.25x = 338,205,892.64
5. Step 5: Solve for x
   x = 338,205,892.64/11,981.25
6. Step 6: Final answer
   x = 28,227.93