Finding the Third Proportional to 5,239.69 and 8,104.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,239.69 : 8,104.22 = 8,104.22 : x
2. Step 2: Convert to fraction form
   5,239.69/8,104.22 = 8,104.22/x
3. Step 3: Cross multiply
   5,239.69x = 8,104.22 × 8,104.22
4. Step 4: Simplify right side
   5,239.69x = 65,678,361.55
5. Step 5: Solve for x
   x = 65,678,361.55/5,239.69
6. Step 6: Final answer
   x = 12,534.79