Finding the Third Proportional to 4,581.56 and 8,209.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,581.56 : 8,209.69 = 8,209.69 : x
2. Step 2: Convert to fraction form
   4,581.56/8,209.69 = 8,209.69/x
3. Step 3: Cross multiply
   4,581.56x = 8,209.69 × 8,209.69
4. Step 4: Simplify right side
   4,581.56x = 67,398,968.85
5. Step 5: Solve for x
   x = 67,398,968.85/4,581.56
6. Step 6: Final answer
   x = 14,710.91