Hi Shubham,
The second and third merit lists are released on the basis of the current availability of the seats. For B.Com (//B.Com) there are total 240 seats of which most of the seats allocated to the students to whom the college is obliged to admit or to the In-House students the remaining seats are then opened for the students of other colleges or boards. So chances of third merit list release are always tough.
For More information please refer below links:
https://maharesults-nic.in/st-xavier-college-cut-off-2019-first-second-third/#How_to_Download_St_Xavier_College_Cut_Off_2019_Online_fromxaviersedu http://xaviers.edu/main/index.php/admissions-and-courses?showall=&start=1
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