You are downloading the Meet Cortana APPX file v188.8.131.52 for Windows Phone. Meet Cortana is a free and useful Productivity app: This app will help you getting started with Cortana, giving you info on Settings, describing all Cortana's features and interrogative + humorous ... You can now download the offline APPX file to install & try it.
Download Locations for Meet Cortana 184.108.40.206 APPX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline APPX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Meet Cortana APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.