Finding the Third Proportional to 856,704 and 1,809,856

Step by Step Solution

1. Step 1: Write the proportion equation
   856,704 : 1,809,856 = 1,809,856 : x
2. Step 2: Convert to fraction form
   856,704/1,809,856 = 1,809,856/x
3. Step 3: Cross multiply
   856,704x = 1,809,856 × 1,809,856
4. Step 4: Simplify right side
   856,704x = 3,275,578,740,736
5. Step 5: Solve for x
   x = 3,275,578,740,736/856,704
6. Step 6: Final answer
   x = 3,823,466.15