Finding the Third Proportional to 858,608 and 1,864,828

Step by Step Solution

1. Step 1: Write the proportion equation
   858,608 : 1,864,828 = 1,864,828 : x
2. Step 2: Convert to fraction form
   858,608/1,864,828 = 1,864,828/x
3. Step 3: Cross multiply
   858,608x = 1,864,828 × 1,864,828
4. Step 4: Simplify right side
   858,608x = 3,477,583,469,584
5. Step 5: Solve for x
   x = 3,477,583,469,584/858,608
6. Step 6: Final answer
   x = 4,050,257.47