Find the intersection of dict1, dict2, and dict3 and store the result into my_dict without changing dict1, dict2, or dict3. Note that original dictionaries should stay untouched .

dict1 = dict(key2='Python is still cool', key1=123)

dict2 = {'key1': 123, 'special_key': 'secret'}

dict3 = dict([('key2', 456), ('keyX', 'X'), ('key1', 123)])

# 'Your impelementation'

assert my_dict == {'key1':123}