Finding the Third Proportional to 1,258.03 and 2,718.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.03 : 2,718.56 = 2,718.56 : x
2. Step 2: Convert to fraction form
   1,258.03/2,718.56 = 2,718.56/x
3. Step 3: Cross multiply
   1,258.03x = 2,718.56 × 2,718.56
4. Step 4: Simplify right side
   1,258.03x = 7,390,582.07
5. Step 5: Solve for x
   x = 7,390,582.07/1,258.03
6. Step 6: Final answer
   x = 5,874.72