Given numbers are 3,7,12,89,34,98.Firstly, the numbers should be set in ascending order. ie., 3,7,12,34,89,98.As these are having Even set of numbers, the Mean of both middle numbers is the Median.The Set of Numbers, i.e., n=6.The two middle numbers items will be n/2 and (n+2)/2.⇒ n/2=6/2 ⇒ n/2=3.⇒ (n+2)/2=(6+2)/2 ⇒ n+2/2=4.The two middle number items 3 and 4 contain the numbers 12 and 34.Now these numbers should be calculated to know the mean of those numbers.The Mean of the numbers 12 and 34 is (n/2+(n+2)/2)/2.= (12+34)/2 = 23.Therefore, the Median of the numbers is 23.