Hagrid tried to calm Grawp down, but it was a challenging task. The giant's immense strength and impulsive nature made it difficult for Hagrid to control him. During their encounter, Grawp accidentally stepped on Hermione's leg, causing her great pain and requiring immediate medical attention.
Despite the dangerous and painful situation, Harry managed to establish a connection with Grawp. By showing kindness and understanding, Harry gained Grawp's trust and managed to calm him down. However, it became clear that Hagrid would need significant help and guidance in caring for and controlling the wild giant in the future.