Unless that missing stitch has thrown your whole pattern off [not likely since you didn't miss it until quite a few rows later] I'd do the Famous Aunt Dot Fudge:
Take a length of the same yarn, thread it through the dropped stitch. Pull both to the wrong side. Thread one end of your yarn strand through a couple of wrong-side stitches to anchor it. Now tie a knot in your yarn length, then weave the two ends into the wrong side of your work as if you'd just added a second ball of yarn.
Voila! Nobody'll know unless they already know to look There for your goof.
Fudge can be good.
PS: Oh, be sure to do an increase so that your dropped stitch gets replaced in the overall pattern.