Finding the Third Proportional to 11,398.50 and 13,443.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,398.50 : 13,443.75 = 13,443.75 : x
2. Step 2: Convert to fraction form
   11,398.50/13,443.75 = 13,443.75/x
3. Step 3: Cross multiply
   11,398.50x = 13,443.75 × 13,443.75
4. Step 4: Simplify right side
   11,398.50x = 180,734,414.06
5. Step 5: Solve for x
   x = 180,734,414.06/11,398.50
6. Step 6: Final answer
   x = 15,855.98