Finding the Third Proportional to 11,790.56 and 18,403.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,790.56 : 18,403.31 = 18,403.31 : x
2. Step 2: Convert to fraction form
   11,790.56/18,403.31 = 18,403.31/x
3. Step 3: Cross multiply
   11,790.56x = 18,403.31 × 18,403.31
4. Step 4: Simplify right side
   11,790.56x = 338,681,910.97
5. Step 5: Solve for x
   x = 338,681,910.97/11,790.56
6. Step 6: Final answer
   x = 28,724.83