Finding the Third Proportional to 858,636 and 1,864,800

Step by Step Solution

1. Step 1: Write the proportion equation
   858,636 : 1,864,800 = 1,864,800 : x
2. Step 2: Convert to fraction form
   858,636/1,864,800 = 1,864,800/x
3. Step 3: Cross multiply
   858,636x = 1,864,800 × 1,864,800
4. Step 4: Simplify right side
   858,636x = 3,477,479,040,000
5. Step 5: Solve for x
   x = 3,477,479,040,000/858,636
6. Step 6: Final answer
   x = 4,050,003.77