If your bank information has not changed, then it would go to that same account as the first two. Please note that although many payments went out on the 17th of March, these were not all-inclusive of all checks to be distributed. The IRS has stated that there will be numerous "pay outs" as well as stating that they have until December 31st, 2021, to send out all payments. I do hope you are not one of the last ones!
Here is literally the "latest" comment made by the IRS (8hrs ago):
The IRS is asking you don't call them about the status of your third stimulus. Instead, if you received a confirmation letter (Notice 1444 or Notice 144-B) from the IRS saying your payment was issued, but you didn't get it, you can request an IRS payment trace. (8 hours ago)
You can check the status of your stimulus check using the IRS Get My Payment Tool which updates once a day. It will show you how your money is being sent, either direct deposit or through the mail (paper check or debit card). If you get a "not available" status message, the IRS says you're either not eligible for a third stimulus check or your payment hasn't been processed yet. If you get a "need more information" message, you can enter your direct-deposit details to speed up your payment.
