Finding the Third Proportional to 1,228.92 and 3,057.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.92 : 3,057.12 = 3,057.12 : x
2. Step 2: Convert to fraction form
   1,228.92/3,057.12 = 3,057.12/x
3. Step 3: Cross multiply
   1,228.92x = 3,057.12 × 3,057.12
4. Step 4: Simplify right side
   1,228.92x = 9,345,965.50
5. Step 5: Solve for x
   x = 9,345,965.50/1,228.92
6. Step 6: Final answer
   x = 7,605.01