L=2.91mH

C=68.2pF + 180pF=248.2pF

L=2.91mH=0.0291H

C=248.2pF=0.0000000002482F

Rs=sqrt(L/C)

Rs=sqrt(0.0291/0.0000000002482)

Rs=sqrt(117244157.937147461)

Rs=10827.9341

Cs=[2*pi*sqrt(LC)]/Rs

Cs=[2*(22/7)*sqrt(0.0291*0.0000000002482)]/10827.9341

Cs=0.000000000156010404798

If 10^-9 = n

Then Cs=1.56nF

So I get

Rs=10k8

Cs=1.56nF

Sorry that I have only O level maths and that was grade B I got many many many years ago!!