Finding the Third Proportional to 3,057.75 and 4,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,057.75 : 4,099.50 = 4,099.50 : x
2. Step 2: Convert to fraction form
   3,057.75/4,099.50 = 4,099.50/x
3. Step 3: Cross multiply
   3,057.75x = 4,099.50 × 4,099.50
4. Step 4: Simplify right side
   3,057.75x = 16,805,900.25
5. Step 5: Solve for x
   x = 16,805,900.25/3,057.75
6. Step 6: Final answer
   x = 5,496.17