A male rankins and a female beardie have the potential to breed; the male will sometimes struggle to "reach" though... A male beardie and a female rankins would be asking for trouble though because of the size difference - male beardies aren't known for their gentleness... You get a hybrid of P. vitticeps and P. henrylawsoni known as a "Vittikins" dragon.
I personally would be more inclined not to hybridise them - get 2-3 rankins dragons if you wanted to breed them. There are some ethical issues (a whole debate in itself) with producing hybrids, and not many rankins are being bred at the moment. As there is an export ban from Australia, the ones in captivity are all we're going to get so to speak, so it would be a bit of a "waste" to keep contaminating rankin lines with the more common inland beardie genes.
u can do this but judging by the hybridisation last year it is not worth the effort many of these young didnt sell and many breeders were selling them for £15 thats less than a normal beardie, also breed pure rankins as they are the best lol