Finding the Third Proportional to 1,920.38 and 4,480.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.38 : 4,480.31 = 4,480.31 : x
2. Step 2: Convert to fraction form
   1,920.38/4,480.31 = 4,480.31/x
3. Step 3: Cross multiply
   1,920.38x = 4,480.31 × 4,480.31
4. Step 4: Simplify right side
   1,920.38x = 20,073,200.10
5. Step 5: Solve for x
   x = 20,073,200.10/1,920.38
6. Step 6: Final answer
   x = 10,452.75