Finding the Third Proportional to 685,540 and 1,476,344

Step by Step Solution

1. Step 1: Write the proportion equation
   685,540 : 1,476,344 = 1,476,344 : x
2. Step 2: Convert to fraction form
   685,540/1,476,344 = 1,476,344/x
3. Step 3: Cross multiply
   685,540x = 1,476,344 × 1,476,344
4. Step 4: Simplify right side
   685,540x = 2,179,591,606,336
5. Step 5: Solve for x
   x = 2,179,591,606,336/685,540
6. Step 6: Final answer
   x = 3,179,379.18