Finding the Third Proportional to 8,504.25 and 13,200.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,504.25 : 13,200.38 = 13,200.38 : x
2. Step 2: Convert to fraction form
   8,504.25/13,200.38 = 13,200.38/x
3. Step 3: Cross multiply
   8,504.25x = 13,200.38 × 13,200.38
4. Step 4: Simplify right side
   8,504.25x = 174,249,900.14
5. Step 5: Solve for x
   x = 174,249,900.14/8,504.25
6. Step 6: Final answer
   x = 20,489.74