Finding the Third Proportional to 665,722 and 1,081,580

Step by Step Solution

1. Step 1: Write the proportion equation
   665,722 : 1,081,580 = 1,081,580 : x
2. Step 2: Convert to fraction form
   665,722/1,081,580 = 1,081,580/x
3. Step 3: Cross multiply
   665,722x = 1,081,580 × 1,081,580
4. Step 4: Simplify right side
   665,722x = 1,169,815,296,400
5. Step 5: Solve for x
   x = 1,169,815,296,400/665,722
6. Step 6: Final answer
   x = 1,757,212.92