How i can init variable/object after constructor in initialize list?

I created a GameObject class in which I have 2 constructors. One default GameObject () = default; but in which at me in sheet of initializations variables are initialized. And in the second constructor GameObject(vec3 pos, vec3 rot, vec3 scale), and I want to add a default constructor in the init list so that it has the same parameters. But I need to modify some variables a bit, for example transform(Transformation((*this)) to transform(Transformation((*this), position, rotation, scale). But I can't do it because I'm have a error "a delegated constructor cannot have other map-initialization".

This a template code:

class GameObject
{
    //params .....


    GameObject::GameObject()
        :  transform(Transformation((*this))), render(true)

    {
    }

    GameObject::GameObject(glm::vec3 position, glm::vec3 rotation, glm::vec3 scale)
        : GameObject(),
          transform(Transformation((*this), position, rotation, scale) //here a error
    {
    }
}

How can I fix that? Or maybe C++ have another way to do that?