Finding the Third Proportional to 11,487.45 and 18,247.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,487.45 : 18,247.78 = 18,247.78 : x
2. Step 2: Convert to fraction form
   11,487.45/18,247.78 = 18,247.78/x
3. Step 3: Cross multiply
   11,487.45x = 18,247.78 × 18,247.78
4. Step 4: Simplify right side
   11,487.45x = 332,981,520.55
5. Step 5: Solve for x
   x = 332,981,520.55/11,487.45
6. Step 6: Final answer
   x = 28,986.56