Finding the Third Proportional to 400,744 and 599,860

Step by Step Solution

1. Step 1: Write the proportion equation
   400,744 : 599,860 = 599,860 : x
2. Step 2: Convert to fraction form
   400,744/599,860 = 599,860/x
3. Step 3: Cross multiply
   400,744x = 599,860 × 599,860
4. Step 4: Simplify right side
   400,744x = 359,832,019,600
5. Step 5: Solve for x
   x = 359,832,019,600/400,744
6. Step 6: Final answer
   x = 897,909.94