Im trying to make an RTS camera that would pan in the direction of the mouse instead of an axis

For starters the code

 private float camerapanspeed = 10f;
 private float MousePositionX;
 private float MousePositionY;
 private float MouseOffsetX;
 private float MouseOffsetY;

 // Use this for initialization
 void Start () {


 
 
 }
 
 // Update is called once per frame
 void Update ()
 {
 
     MousePositionX =Input.mousePosition.x - Screen.width / 2;
     MousePositionY =Input.mousePosition.y - Screen.height / 2;
     MouseOffsetX = MousePositionX / 100
     MouseOffsetY =

     if (Input.mousePosition.x > Screen.width - 50 | Input.mousePosition.x < 0 + 50 ) {
         transform.Translate (Vector3.right * MousePositionX * Time.deltaTime , Space.World);
         transform.Translate (Vector3.forward * MousePositionY *Time.deltaTime , Space.World);

This is a part that manages the camera pan on right and left side of the screen moving it both horizontaly and verticaly depending on how high the cursor is on the Y axis of the screen measured from the middle.
I cant find a way that would allow me to make the camera move at a specific speed of my chosing.