Finding the Third Proportional to 851,836 and 1,821,864

Step by Step Solution

1. Step 1: Write the proportion equation
   851,836 : 1,821,864 = 1,821,864 : x
2. Step 2: Convert to fraction form
   851,836/1,821,864 = 1,821,864/x
3. Step 3: Cross multiply
   851,836x = 1,821,864 × 1,821,864
4. Step 4: Simplify right side
   851,836x = 3,319,188,434,496
5. Step 5: Solve for x
   x = 3,319,188,434,496/851,836
6. Step 6: Final answer
   x = 3,896,511.11