Finding the Third Proportional to 1,073.57 and 2,145.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.57 : 2,145.71 = 2,145.71 : x
2. Step 2: Convert to fraction form
   1,073.57/2,145.71 = 2,145.71/x
3. Step 3: Cross multiply
   1,073.57x = 2,145.71 × 2,145.71
4. Step 4: Simplify right side
   1,073.57x = 4,604,067.05
5. Step 5: Solve for x
   x = 4,604,067.05/1,073.57
6. Step 6: Final answer
   x = 4,288.57