Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_15026994_3 (episode VARCHAR, viewing_figure VARCHAR)

### Question ###
Which episode has been viewed 6.34 million times? 

### Accurate SQL ###

SELECT episode FROM table_15026994_3 WHERE viewing_figure = "6.34 million"