Finding the Third Proportional to 5,560.50 and 8,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,560.50 : 8,659.50 = 8,659.50 : x
2. Step 2: Convert to fraction form
   5,560.50/8,659.50 = 8,659.50/x
3. Step 3: Cross multiply
   5,560.50x = 8,659.50 × 8,659.50
4. Step 4: Simplify right side
   5,560.50x = 74,986,940.25
5. Step 5: Solve for x
   x = 74,986,940.25/5,560.50
6. Step 6: Final answer
   x = 13,485.65