The throttle cable on a 1998 Chrysler Sebring LXI 2.5L is located on the
passenger side of the engine compartment. It runs from the throttle pedal inside the car, through the firewall, and connects to the throttle body. You'll likely see it near the area where the intake manifold meets the throttle body. It will be a relatively thin, flexible cable with a sheath around it.
However, finding the exact location can be tricky without visual inspection. The routing can vary slightly due to different engine configurations or added accessories. It's best to consult a repair manual specific to your 1998 Chrysler Sebring LXI 2.5L for diagrams and detailed information. A Haynes or Chilton manual would be helpful.