Finding the Third Proportional to 1,128.25 and 1,659

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.25 : 1,659 = 1,659 : x
2. Step 2: Convert to fraction form
   1,128.25/1,659 = 1,659/x
3. Step 3: Cross multiply
   1,128.25x = 1,659 × 1,659
4. Step 4: Simplify right side
   1,128.25x = 2,752,281
5. Step 5: Solve for x
   x = 2,752,281/1,128.25
6. Step 6: Final answer
   x = 2,439.42