Finding the Third Proportional to 2,111.06 and 4,480.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.06 : 4,480.31 = 4,480.31 : x
2. Step 2: Convert to fraction form
   2,111.06/4,480.31 = 4,480.31/x
3. Step 3: Cross multiply
   2,111.06x = 4,480.31 × 4,480.31
4. Step 4: Simplify right side
   2,111.06x = 20,073,200.10
5. Step 5: Solve for x
   x = 20,073,200.10/2,111.06
6. Step 6: Final answer
   x = 9,508.58