Find a clip in any sequence

The clip information next to the thumbnail viewer in the Project panel tells you how many a times a clip is used, and gives the locations of each use in any of your project’s sequences.

Select a clip in the Project panel.
Toward the top of the project panel, next to the thumbnail for the clip, click the Clip Usage triangle on the Movie line next to the pixel aspect ratio.
A popup menu will show the timecode location for the clip for any sequence in which it is used.

The locations of a clip in the Clip Usage menu of the Project panel
Click the desired location.
The desired sequence panel will move forward and the current-time indicator will jump to the location of the clip.