Finding the Third Proportional to 1,403,721 and 2,231,568

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403,721 : 2,231,568 = 2,231,568 : x
2. Step 2: Convert to fraction form
   1,403,721/2,231,568 = 2,231,568/x
3. Step 3: Cross multiply
   1,403,721x = 2,231,568 × 2,231,568
4. Step 4: Simplify right side
   1,403,721x = 4,979,895,738,624
5. Step 5: Solve for x
   x = 4,979,895,738,624/1,403,721
6. Step 6: Final answer
   x = 3,547,639.27