First letter of x/2=17, placed 2nd place.

123456
Across
  1. 2. Made with salt, is what fish want.
  2. 3. Die never, live forever.
  3. 5. In a row, letters show.
Down
  1. 1. Made by bees, hung in trees.
  2. 4. We use it to eat, we use it to speak.
  3. 6. Under there is a creep, on it I like to sleep.