How do I find chi-squared or t-values on their respective tables of value for large degrees of freedom?

So ... I already know how to find t-values and chi-squared values on the tables .
Problems is ... pretty much all tables go only until 50 or 100 degrees of freedom. I just found a problem where I need to know the chi-squared value for a probability with 212 degrees of freedom and I'm stuck.
2 answers 2