Finding the Third Proportional to 497,486.50 and 789,019

Step by Step Solution

1. Step 1: Write the proportion equation
   497,486.50 : 789,019 = 789,019 : x
2. Step 2: Convert to fraction form
   497,486.50/789,019 = 789,019/x
3. Step 3: Cross multiply
   497,486.50x = 789,019 × 789,019
4. Step 4: Simplify right side
   497,486.50x = 622,550,982,361
5. Step 5: Solve for x
   x = 622,550,982,361/497,486.50
6. Step 6: Final answer
   x = 1,251,392.72