Finding the Third Proportional to 8,691.05 and 12,723.33

Step by Step Solution

1. Step 1: Write the proportion equation
   8,691.05 : 12,723.33 = 12,723.33 : x
2. Step 2: Convert to fraction form
   8,691.05/12,723.33 = 12,723.33/x
3. Step 3: Cross multiply
   8,691.05x = 12,723.33 × 12,723.33
4. Step 4: Simplify right side
   8,691.05x = 161,883,078.58
5. Step 5: Solve for x
   x = 161,883,078.58/8,691.05
6. Step 6: Final answer
   x = 18,626.42