Finding the Third Proportional to 384,992 and 839,864

Step by Step Solution

1. Step 1: Write the proportion equation
   384,992 : 839,864 = 839,864 : x
2. Step 2: Convert to fraction form
   384,992/839,864 = 839,864/x
3. Step 3: Cross multiply
   384,992x = 839,864 × 839,864
4. Step 4: Simplify right side
   384,992x = 705,371,538,496
5. Step 5: Solve for x
   x = 705,371,538,496/384,992
6. Step 6: Final answer
   x = 1,832,171.94