Finding the Third Proportional to 869.50 and 1,766

Step by Step Solution

1. Step 1: Write the proportion equation
   869.50 : 1,766 = 1,766 : x
2. Step 2: Convert to fraction form
   869.50/1,766 = 1,766/x
3. Step 3: Cross multiply
   869.50x = 1,766 × 1,766
4. Step 4: Simplify right side
   869.50x = 3,118,756
5. Step 5: Solve for x
   x = 3,118,756/869.50
6. Step 6: Final answer
   x = 3,586.84