Finding the Third Proportional to 514.90 and 1,145.18

Step by Step Solution

1. Step 1: Write the proportion equation
   514.90 : 1,145.18 = 1,145.18 : x
2. Step 2: Convert to fraction form
   514.90/1,145.18 = 1,145.18/x
3. Step 3: Cross multiply
   514.90x = 1,145.18 × 1,145.18
4. Step 4: Simplify right side
   514.90x = 1,311,436.52
5. Step 5: Solve for x
   x = 1,311,436.52/514.90
6. Step 6: Final answer
   x = 2,546.98