Finding the Third Proportional to 490,842 and 720,105.75

Step by Step Solution

1. Step 1: Write the proportion equation
   490,842 : 720,105.75 = 720,105.75 : x
2. Step 2: Convert to fraction form
   490,842/720,105.75 = 720,105.75/x
3. Step 3: Cross multiply
   490,842x = 720,105.75 × 720,105.75
4. Step 4: Simplify right side
   490,842x = 518,552,291,183.06
5. Step 5: Solve for x
   x = 518,552,291,183.06/490,842
6. Step 6: Final answer
   x = 1,056,454.60