Installing the package will also install a source list entry which will automatically
update the package to a new version with the rest of the systems updates.
Download using wget.
wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
Install the package.
dpkg -i google-chrome-stable_current_amd64.deb
Add a source-list file google-chrome.sources to the directory /etc/apt/sources.list.d/.
cat <<EOD | sudo tee /etc/apt/sources.list.d/google-chrome.sources >/dev/null
Types: deb
Architectures: $(dpkg --print-architecture)
Suites: stable
Components: main
URIs: https://dl.google.com/linux/chrome/deb/
Signed-By:
$(wget -qO- https://dl.google.com/linux/linux_signing_key.pub | sed 's/^/ /')
EOD
Install the package.
sudo apt update && sudo apt install google-chrome-stable