Finding the Third Proportional to 387,342 and 839,022

Step by Step Solution

1. Step 1: Write the proportion equation
   387,342 : 839,022 = 839,022 : x
2. Step 2: Convert to fraction form
   387,342/839,022 = 839,022/x
3. Step 3: Cross multiply
   387,342x = 839,022 × 839,022
4. Step 4: Simplify right side
   387,342x = 703,957,916,484
5. Step 5: Solve for x
   x = 703,957,916,484/387,342
6. Step 6: Final answer
   x = 1,817,406.62