Unmatched connectors on condenser mic and wireless belt pack - make adapter?
You've got it backwards. A capacitor blocks DC and passes AC (audio), so the bias voltage would pass through pin 2 with the resistor, and the audio would pass through pin 3 with the capacitor.

Since we don't have a precise schematic it's hard to be sure this is exactly right, but assuming there are no surprises:

You would want to connect both pin 2 and 3 of the Shure pinout to pin 2 of the PT40. If you connect only pin 2 through, then the audio will be attenuated by the resistor; if you connect only pin 3 through then the bias will be missing.

On the PT40 side, assuming the two audio pins are differential (balanced, opposite phases), you will need to connect pin 3 (PT40) and pin 1 (PT40 and Shure) together, otherwise the input will be floating and you get no audio through. For best noise rejection, make this junction at the mic end of your adapter.

Again, please update your question with schematics or exact original wording if you have them to be sure this is correct advice.