Finding the Third Proportional to 1,143.50 and 1,549.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143.50 : 1,549.50 = 1,549.50 : x
2. Step 2: Convert to fraction form
   1,143.50/1,549.50 = 1,549.50/x
3. Step 3: Cross multiply
   1,143.50x = 1,549.50 × 1,549.50
4. Step 4: Simplify right side
   1,143.50x = 2,400,950.25
5. Step 5: Solve for x
   x = 2,400,950.25/1,143.50
6. Step 6: Final answer
   x = 2,099.65