Finding the Third Proportional to 664,696 and 1,449,686

Step by Step Solution

1. Step 1: Write the proportion equation
   664,696 : 1,449,686 = 1,449,686 : x
2. Step 2: Convert to fraction form
   664,696/1,449,686 = 1,449,686/x
3. Step 3: Cross multiply
   664,696x = 1,449,686 × 1,449,686
4. Step 4: Simplify right side
   664,696x = 2,101,589,498,596
5. Step 5: Solve for x
   x = 2,101,589,498,596/664,696
6. Step 6: Final answer
   x = 3,161,730.32