No, it is not correct that the latitude and altitude of the Egyptian Pyramids of Giza correspond to the speed of light. This claim is a popular misconception or a pseudoscientific claim with no basis in reality.
The latitude and altitude of the pyramids are geographic coordinates that determine their position on Earth's surface. The latitude of the Giza pyramids is approximately 29.9792 degrees north, and the altitude is approximately 139 meters above sea level.
On the other hand, the speed of light in a vacuum is approximately 299,792,458 meters per second. The number you mentioned, 299,792,458, does approximate the value of the speed of light as measured in meters per second, but it is purely coincidental that it appears similar to the coordinates of the pyramids.
There is no inherent connection between the coordinates of the pyramids and the speed of light. It is important to be cautious of claims that attempt to find profound or mystical connections where none exist. It is always advisable to rely on scientifically supported information and evidence-based explanations.