Finding the Third Proportional to 636.56 and 1,348.50

Step by Step Solution

1. Step 1: Write the proportion equation
   636.56 : 1,348.50 = 1,348.50 : x
2. Step 2: Convert to fraction form
   636.56/1,348.50 = 1,348.50/x
3. Step 3: Cross multiply
   636.56x = 1,348.50 × 1,348.50
4. Step 4: Simplify right side
   636.56x = 1,818,452.25
5. Step 5: Solve for x
   x = 1,818,452.25/636.56
6. Step 6: Final answer
   x = 2,856.68