.......
You're not getting a European majority in Egypt (or anywhere in Africa) with a 19th century PoD, barring genocide, mass murder, and the like.
If you really want a chance at European-majority Egypt, a surviving Ptolemaic Egypt (with regular imports of Hellenes and Celts) might succeed. But you'd have to have a really really early PoD for that.
For reference, the population of Egypt in 1940 was ~17 million, of which 100,000 were Greek, and ~50,000 were Italian. Even if you increased their population by 100 times, there *still* wouldn't be a European majority in Egypt!
Also, what is it with all these ridiculous "European/white majority in African countries" threads? South Africa, Zimbabwe, and now Egypt?