Finding the Third Proportional to 7,198.88 and 11,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,198.88 : 11,105.72 = 11,105.72 : x
2. Step 2: Convert to fraction form
   7,198.88/11,105.72 = 11,105.72/x
3. Step 3: Cross multiply
   7,198.88x = 11,105.72 × 11,105.72
4. Step 4: Simplify right side
   7,198.88x = 123,336,988.95
5. Step 5: Solve for x
   x = 123,336,988.95/7,198.88
6. Step 6: Final answer
   x = 17,132.81