Finding the Third Proportional to 485.50 and 1,150

Step by Step Solution

1. Step 1: Write the proportion equation
   485.50 : 1,150 = 1,150 : x
2. Step 2: Convert to fraction form
   485.50/1,150 = 1,150/x
3. Step 3: Cross multiply
   485.50x = 1,150 × 1,150
4. Step 4: Simplify right side
   485.50x = 1,322,500
5. Step 5: Solve for x
   x = 1,322,500/485.50
6. Step 6: Final answer
   x = 2,724.00