Finding the Third Proportional to 1,239 and 2,104.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239 : 2,104.50 = 2,104.50 : x
2. Step 2: Convert to fraction form
   1,239/2,104.50 = 2,104.50/x
3. Step 3: Cross multiply
   1,239x = 2,104.50 × 2,104.50
4. Step 4: Simplify right side
   1,239x = 4,428,920.25
5. Step 5: Solve for x
   x = 4,428,920.25/1,239
6. Step 6: Final answer
   x = 3,574.59