Finding the Third Proportional to 664,698 and 1,449,690

Step by Step Solution

1. Step 1: Write the proportion equation
   664,698 : 1,449,690 = 1,449,690 : x
2. Step 2: Convert to fraction form
   664,698/1,449,690 = 1,449,690/x
3. Step 3: Cross multiply
   664,698x = 1,449,690 × 1,449,690
4. Step 4: Simplify right side
   664,698x = 2,101,601,096,100
5. Step 5: Solve for x
   x = 2,101,601,096,100/664,698
6. Step 6: Final answer
   x = 3,161,738.26