Finding the Third Proportional to 4,105.69 and 7,231.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,105.69 : 7,231.78 = 7,231.78 : x
2. Step 2: Convert to fraction form
   4,105.69/7,231.78 = 7,231.78/x
3. Step 3: Cross multiply
   4,105.69x = 7,231.78 × 7,231.78
4. Step 4: Simplify right side
   4,105.69x = 52,298,660.05
5. Step 5: Solve for x
   x = 52,298,660.05/4,105.69
6. Step 6: Final answer
   x = 12,738.10