Finding the Third Proportional to 2,457.56 and 3,942.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,457.56 : 3,942.56 = 3,942.56 : x
2. Step 2: Convert to fraction form
   2,457.56/3,942.56 = 3,942.56/x
3. Step 3: Cross multiply
   2,457.56x = 3,942.56 × 3,942.56
4. Step 4: Simplify right side
   2,457.56x = 15,543,799.07
5. Step 5: Solve for x
   x = 15,543,799.07/2,457.56
6. Step 6: Final answer
   x = 6,324.88