Finding the Third Proportional to 868.54 and 1,314.83

Step by Step Solution

1. Step 1: Write the proportion equation
   868.54 : 1,314.83 = 1,314.83 : x
2. Step 2: Convert to fraction form
   868.54/1,314.83 = 1,314.83/x
3. Step 3: Cross multiply
   868.54x = 1,314.83 × 1,314.83
4. Step 4: Simplify right side
   868.54x = 1,728,767.86
5. Step 5: Solve for x
   x = 1,728,767.86/868.54
6. Step 6: Final answer
   x = 1,990.44