Identify the reactant X and the product Y

In the given reaction the reactant is acetone and the first product formed is (퐶퐻3)3퐶−푂푀푔−퐶푙, so in this product there is addition of a methyl group and magnesium chloride, hence the X will be 퐶퐻3푀푔퐶푙, and 퐶퐻3푀푔퐶푙is a Grignard reagent. When this compound is hydrolyzed, there is formation of tertiary alcohol, so the product will be (퐶퐻3)3퐶−푂퐻and (퐶퐻3)3퐶−푂퐻is Y.