System Operation: Powerflow

In third gear the forward clutch holds the front sun gear stationary.
The direct clutch drives the rear sun gear.
Power flows from the center sun gear to the center planetary carrier/front ring gear. From there, torque is transferred to the rear ring gear/front planetary carrier.
Power also flows from the rear sun gear to the rear ring gear/front planetary carrier.
The two inputs to the front planetary carrier combine and transfer torque to the output hub to produce a gear ratio of 1.84.