Finding the Third Proportional to 871.38 and 1,367.82

Step by Step Solution

1. Step 1: Write the proportion equation
   871.38 : 1,367.82 = 1,367.82 : x
2. Step 2: Convert to fraction form
   871.38/1,367.82 = 1,367.82/x
3. Step 3: Cross multiply
   871.38x = 1,367.82 × 1,367.82
4. Step 4: Simplify right side
   871.38x = 1,870,943.09
5. Step 5: Solve for x
   x = 1,870,943.09/871.38
6. Step 6: Final answer
   x = 2,147.10