Finding the Third Proportional to 18,640.76 and 40,732.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,640.76 : 40,732.88 = 40,732.88 : x
2. Step 2: Convert to fraction form
   18,640.76/40,732.88 = 40,732.88/x
3. Step 3: Cross multiply
   18,640.76x = 40,732.88 × 40,732.88
4. Step 4: Simplify right side
   18,640.76x = 1,659,167,105.77
5. Step 5: Solve for x
   x = 1,659,167,105.77/18,640.76
6. Step 6: Final answer
   x = 89,007.49