Finding the Third Proportional to 7,272.18 and 11,119.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,272.18 : 11,119.78 = 11,119.78 : x
2. Step 2: Convert to fraction form
   7,272.18/11,119.78 = 11,119.78/x
3. Step 3: Cross multiply
   7,272.18x = 11,119.78 × 11,119.78
4. Step 4: Simplify right side
   7,272.18x = 123,649,535.05
5. Step 5: Solve for x
   x = 123,649,535.05/7,272.18
6. Step 6: Final answer
   x = 17,003.10