Finding the Third Proportional to 664,672 and 1,449,642

Step by Step Solution

1. Step 1: Write the proportion equation
   664,672 : 1,449,642 = 1,449,642 : x
2. Step 2: Convert to fraction form
   664,672/1,449,642 = 1,449,642/x
3. Step 3: Cross multiply
   664,672x = 1,449,642 × 1,449,642
4. Step 4: Simplify right side
   664,672x = 2,101,461,928,164
5. Step 5: Solve for x
   x = 2,101,461,928,164/664,672
6. Step 6: Final answer
   x = 3,161,652.56