Finding the Third Proportional to 664,636 and 1,449,572

Step by Step Solution

1. Step 1: Write the proportion equation
   664,636 : 1,449,572 = 1,449,572 : x
2. Step 2: Convert to fraction form
   664,636/1,449,572 = 1,449,572/x
3. Step 3: Cross multiply
   664,636x = 1,449,572 × 1,449,572
4. Step 4: Simplify right side
   664,636x = 2,101,258,983,184
5. Step 5: Solve for x
   x = 2,101,258,983,184/664,636
6. Step 6: Final answer
   x = 3,161,518.46