Finding the Third Proportional to 381,007.50 and 839,766

Step by Step Solution

1. Step 1: Write the proportion equation
   381,007.50 : 839,766 = 839,766 : x
2. Step 2: Convert to fraction form
   381,007.50/839,766 = 839,766/x
3. Step 3: Cross multiply
   381,007.50x = 839,766 × 839,766
4. Step 4: Simplify right side
   381,007.50x = 705,206,934,756
5. Step 5: Solve for x
   x = 705,206,934,756/381,007.50
6. Step 6: Final answer
   x = 1,850,900.40