Finding the Third Proportional to 8,609.50 and 13,303.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,609.50 : 13,303.50 = 13,303.50 : x
2. Step 2: Convert to fraction form
   8,609.50/13,303.50 = 13,303.50/x
3. Step 3: Cross multiply
   8,609.50x = 13,303.50 × 13,303.50
4. Step 4: Simplify right side
   8,609.50x = 176,983,112.25
5. Step 5: Solve for x
   x = 176,983,112.25/8,609.50
6. Step 6: Final answer
   x = 20,556.72