Finding the Third Proportional to 370,686 and 809,350.50

Step by Step Solution

1. Step 1: Write the proportion equation
   370,686 : 809,350.50 = 809,350.50 : x
2. Step 2: Convert to fraction form
   370,686/809,350.50 = 809,350.50/x
3. Step 3: Cross multiply
   370,686x = 809,350.50 × 809,350.50
4. Step 4: Simplify right side
   370,686x = 655,048,231,850.25
5. Step 5: Solve for x
   x = 655,048,231,850.25/370,686
6. Step 6: Final answer
   x = 1,767,124.28