Finding the Third Proportional to 8,403.75 and 13,287.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,403.75 : 13,287.38 = 13,287.38 : x
2. Step 2: Convert to fraction form
   8,403.75/13,287.38 = 13,287.38/x
3. Step 3: Cross multiply
   8,403.75x = 13,287.38 × 13,287.38
4. Step 4: Simplify right side
   8,403.75x = 176,554,334.39
5. Step 5: Solve for x
   x = 176,554,334.39/8,403.75
6. Step 6: Final answer
   x = 21,008.99