Finding the Third Proportional to 1,230.19 and 2,574.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,230.19 : 2,574.28 = 2,574.28 : x
2. Step 2: Convert to fraction form
   1,230.19/2,574.28 = 2,574.28/x
3. Step 3: Cross multiply
   1,230.19x = 2,574.28 × 2,574.28
4. Step 4: Simplify right side
   1,230.19x = 6,626,923.95
5. Step 5: Solve for x
   x = 6,626,923.95/1,230.19
6. Step 6: Final answer
   x = 5,386.92