Finding the Third Proportional to 409,662 and 839,004

Step by Step Solution

1. Step 1: Write the proportion equation
   409,662 : 839,004 = 839,004 : x
2. Step 2: Convert to fraction form
   409,662/839,004 = 839,004/x
3. Step 3: Cross multiply
   409,662x = 839,004 × 839,004
4. Step 4: Simplify right side
   409,662x = 703,927,712,016
5. Step 5: Solve for x
   x = 703,927,712,016/409,662
6. Step 6: Final answer
   x = 1,718,313.42