Finding the Third Proportional to 8,700.75 and 12,448.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,700.75 : 12,448.69 = 12,448.69 : x
2. Step 2: Convert to fraction form
   8,700.75/12,448.69 = 12,448.69/x
3. Step 3: Cross multiply
   8,700.75x = 12,448.69 × 12,448.69
4. Step 4: Simplify right side
   8,700.75x = 154,969,820.47
5. Step 5: Solve for x
   x = 154,969,820.47/8,700.75
6. Step 6: Final answer
   x = 17,811.09