Finding the Third Proportional to 1,258.88 and 1,839.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.88 : 1,839.38 = 1,839.38 : x
2. Step 2: Convert to fraction form
   1,258.88/1,839.38 = 1,839.38/x
3. Step 3: Cross multiply
   1,258.88x = 1,839.38 × 1,839.38
4. Step 4: Simplify right side
   1,258.88x = 3,383,300.39
5. Step 5: Solve for x
   x = 3,383,300.39/1,258.88
6. Step 6: Final answer
   x = 2,687.56