By Sruthi Shankar and David French (Reuters) – All three of Wall Street’s main indexes sailed higher on Tuesday as positive earnings reports emboldened investors amid more talk of aggressive policy steps to stem inflation and 30-year Treasury yields breaching 3% for the first time in three years. Shares of megacap companies, including Microsoft Corp, Apple Inc and Amazon.com Inc, rose between 0.7% and 2.7%, even as Treasury yields extended a recent surge. [US/] Johnson & Johnson advanced to a record high, before pulling back slightly, as its quarterly profit exceeded market expectations and it…