Finding the Third Proportional to 858,508 and 1,864,758

Step by Step Solution

1. Step 1: Write the proportion equation
   858,508 : 1,864,758 = 1,864,758 : x
2. Step 2: Convert to fraction form
   858,508/1,864,758 = 1,864,758/x
3. Step 3: Cross multiply
   858,508x = 1,864,758 × 1,864,758
4. Step 4: Simplify right side
   858,508x = 3,477,322,398,564
5. Step 5: Solve for x
   x = 3,477,322,398,564/858,508
6. Step 6: Final answer
   x = 4,050,425.15