Finding the Third Proportional to 20,389.50 and 28,068.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,389.50 : 28,068.75 = 28,068.75 : x
2. Step 2: Convert to fraction form
   20,389.50/28,068.75 = 28,068.75/x
3. Step 3: Cross multiply
   20,389.50x = 28,068.75 × 28,068.75
4. Step 4: Simplify right side
   20,389.50x = 787,854,726.56
5. Step 5: Solve for x
   x = 787,854,726.56/20,389.50
6. Step 6: Final answer
   x = 38,640.22