Answer:
The distance will be "0.319 m".
Step-by-step explanation:
The diagram of the given question is not attached with the problem. Below is the attached figure.
The given values are:


As we know,
The electric field will be equivalent as well as opposite throughout the direction, then
⇒

⇒

By putting the values, we get
⇒

⇒

⇒

⇒

⇒