WASHINGTON — Raytheon, the world’s largest missile maker, boosted its full-year profit forecast and said third-quarter profit rose less than 1 percent.

Profit from continuing operations for the year will be $5.36 to $5.46 a share, up from an estimate of $5.15 to $5.30 a share made in July, the Waltham, Mass., company said Thursday. Analysts projected a profit of $5.32 a share.