Finding the Third Proportional to 20,155.50 and 30,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,155.50 : 30,928.50 = 30,928.50 : x
2. Step 2: Convert to fraction form
   20,155.50/30,928.50 = 30,928.50/x
3. Step 3: Cross multiply
   20,155.50x = 30,928.50 × 30,928.50
4. Step 4: Simplify right side
   20,155.50x = 956,572,112.25
5. Step 5: Solve for x
   x = 956,572,112.25/20,155.50
6. Step 6: Final answer
   x = 47,459.61