Issue while setting slider thumb at a particular point if slider maximum value is too high?

I am working in xamarin forms. I have slider whose maximum value is more than 200. I want to move the slider thumb at particular point on slider for example at 120, but it becomes very tough to put the thumb at particular point. This happens with large maximum values. If values are less then its working fine.

So is there any solution so that we can move the slider's thumb easily at any point if slider's maximum value is very large?