Finding the Third Proportional to 1,285.50 and 1,722

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.50 : 1,722 = 1,722 : x
2. Step 2: Convert to fraction form
   1,285.50/1,722 = 1,722/x
3. Step 3: Cross multiply
   1,285.50x = 1,722 × 1,722
4. Step 4: Simplify right side
   1,285.50x = 2,965,284
5. Step 5: Solve for x
   x = 2,965,284/1,285.50
6. Step 6: Final answer
   x = 2,306.72