Finding the Third Proportional to 5,608.13 and 8,425.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,608.13 : 8,425.69 = 8,425.69 : x
2. Step 2: Convert to fraction form
   5,608.13/8,425.69 = 8,425.69/x
3. Step 3: Cross multiply
   5,608.13x = 8,425.69 × 8,425.69
4. Step 4: Simplify right side
   5,608.13x = 70,992,209.85
5. Step 5: Solve for x
   x = 70,992,209.85/5,608.13
6. Step 6: Final answer
   x = 12,658.81