Finding the Third Proportional to 20,380.50 and 30,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,380.50 : 30,469.50 = 30,469.50 : x
2. Step 2: Convert to fraction form
   20,380.50/30,469.50 = 30,469.50/x
3. Step 3: Cross multiply
   20,380.50x = 30,469.50 × 30,469.50
4. Step 4: Simplify right side
   20,380.50x = 928,390,430.25
5. Step 5: Solve for x
   x = 928,390,430.25/20,380.50
6. Step 6: Final answer
   x = 45,552.88