To promote eco tourism, especially tiger tourism in Maharashtra, Mungantiwar had requested Bachchan to represent the state as its tiger ambassador.
The 72-year-old actor has communicated his consent to Mungantiwar today through a letter.
"I wish to accept your kind offer to render my services towards the state government's initiative for tiger conservation. Kindly treat this letter as my consent to represent the state as tiger ambassador," Bachchan wrote.
Mungantiwar had written letter to Bachchan on July 29 on the occasion of World Tiger Day.
I am confident that involvement of citizens in the save tiger movement will convert it into a popular movement with the help of Amitabh Bachchan, he added.