Finding the Third Proportional to 855,216 and 1,870,816

Step by Step Solution

1. Step 1: Write the proportion equation
   855,216 : 1,870,816 = 1,870,816 : x
2. Step 2: Convert to fraction form
   855,216/1,870,816 = 1,870,816/x
3. Step 3: Cross multiply
   855,216x = 1,870,816 × 1,870,816
4. Step 4: Simplify right side
   855,216x = 3,499,952,505,856
5. Step 5: Solve for x
   x = 3,499,952,505,856/855,216
6. Step 6: Final answer
   x = 4,092,477.81