Finding the Third Proportional to 606.80 and 1,279.83

Step by Step Solution

1. Step 1: Write the proportion equation
   606.80 : 1,279.83 = 1,279.83 : x
2. Step 2: Convert to fraction form
   606.80/1,279.83 = 1,279.83/x
3. Step 3: Cross multiply
   606.80x = 1,279.83 × 1,279.83
4. Step 4: Simplify right side
   606.80x = 1,637,960.03
5. Step 5: Solve for x
   x = 1,637,960.03/606.80
6. Step 6: Final answer
   x = 2,699.35