Finding the Third Proportional to 5,609.06 and 8,709.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,609.06 : 8,709.56 = 8,709.56 : x
2. Step 2: Convert to fraction form
   5,609.06/8,709.56 = 8,709.56/x
3. Step 3: Cross multiply
   5,609.06x = 8,709.56 × 8,709.56
4. Step 4: Simplify right side
   5,609.06x = 75,856,478.94
5. Step 5: Solve for x
   x = 75,856,478.94/5,609.06
6. Step 6: Final answer
   x = 13,523.91