Finding the Third Proportional to 879.33 and 1,277.72

Step by Step Solution

1. Step 1: Write the proportion equation
   879.33 : 1,277.72 = 1,277.72 : x
2. Step 2: Convert to fraction form
   879.33/1,277.72 = 1,277.72/x
3. Step 3: Cross multiply
   879.33x = 1,277.72 × 1,277.72
4. Step 4: Simplify right side
   879.33x = 1,632,565.20
5. Step 5: Solve for x
   x = 1,632,565.20/879.33
6. Step 6: Final answer
   x = 1,856.61