Creating a empty object to not lose children's scale

I want to create an empty object when a proyectile collides with another object, and the make the empty parent.

Like this: Object(parent) <- Empty <- Proyectile

Without the empty object the arrow changes the scale. Also if there's another method to do this please tell me.

this is the code I am using

 function OnCollisionEnter(target : Collision)
 {  
   transform.parent = target.transform;
 
    Destroy (rigidbody);
    Destroy (collider);
 }
  

thank you!