Finding the Third Proportional to 2,118.38 and 3,240.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.38 : 3,240.56 = 3,240.56 : x
2. Step 2: Convert to fraction form
   2,118.38/3,240.56 = 3,240.56/x
3. Step 3: Cross multiply
   2,118.38x = 3,240.56 × 3,240.56
4. Step 4: Simplify right side
   2,118.38x = 10,501,245.32
5. Step 5: Solve for x
   x = 10,501,245.32/2,118.38
6. Step 6: Final answer
   x = 4,957.22