"any way to save the larger image."
Probably not to save as an enlarged file. You can enlarge on screen by holding down Control while using the wheel on your mouse.
The data is fixed as so many bytes and if you use the copy and paste routine into either Word (if it is Text) or a good image editing program, you can resample or whatever term your software uses and save that.
The result, particularly if starting with a small picture will usually be disappointing. The number of pixels in the original are fixed and a good crop of jaggies is your reward.