Finding the Third Proportional to 20,389.50 and 28,713.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,389.50 : 28,713.38 = 28,713.38 : x
2. Step 2: Convert to fraction form
   20,389.50/28,713.38 = 28,713.38/x
3. Step 3: Cross multiply
   20,389.50x = 28,713.38 × 28,713.38
4. Step 4: Simplify right side
   20,389.50x = 824,457,903.89
5. Step 5: Solve for x
   x = 824,457,903.89/20,389.50
6. Step 6: Final answer
   x = 40,435.42