Finding the Third Proportional to 361,315.69 and 789,238.69

Step by Step Solution

1. Step 1: Write the proportion equation
   361,315.69 : 789,238.69 = 789,238.69 : x
2. Step 2: Convert to fraction form
   361,315.69/789,238.69 = 789,238.69/x
3. Step 3: Cross multiply
   361,315.69x = 789,238.69 × 789,238.69
4. Step 4: Simplify right side
   361,315.69x = 622,897,705,846.72
5. Step 5: Solve for x
   x = 622,897,705,846.72/361,315.69
6. Step 6: Final answer
   x = 1,723,970.83