Finding the Third Proportional to 858,648 and 1,864,788

Step by Step Solution

1. Step 1: Write the proportion equation
   858,648 : 1,864,788 = 1,864,788 : x
2. Step 2: Convert to fraction form
   858,648/1,864,788 = 1,864,788/x
3. Step 3: Cross multiply
   858,648x = 1,864,788 × 1,864,788
4. Step 4: Simplify right side
   858,648x = 3,477,434,284,944
5. Step 5: Solve for x
   x = 3,477,434,284,944/858,648
6. Step 6: Final answer
   x = 4,049,895.05