By Lynette Rice
Updated May 25, 2010 at 02:54 PM EDT

Image Credit: Brian Bowen Smith/FoxJack Bauer gave a heartfelt goodbye to Chloe, but only the die-hard fans tuned in to watch: Monday’s two-hour series finale of 24 finished third in its timeslot among adults 18-49 (2.7 rating/8 share) and averaged 8.9 million viewers, according to preliminary ratings. The show also finished in third place among adults 18-34 but was No. 2 in teens.

Thanks to the second-to-last installment of Dancing with the Stars, ABC finished first in viewers last night (12.48 million), followed by CBS (11.88 million). NBC was in fourth with 5.90 million. CBS won the night among adults 18-49 (3.9/11), thanks to finales of How I Met Your Mother, Rules of Engagement, Two and A Half Men, Big Bang Theory and CSI: Miami.

The premiere of ABC’s The Bachelorette, meanwhile, averaged a mere 2.8/8 among adults 18-49, down 7 percent from last year’s premiere on May 18 and the lowest-rated Bachelorette bow ever in the important demographic. And the Chuck finale on NBC clocked in with its lowest rated episode ever (1.8/5), and was down 25 percent from last season’s finale on April 27.