To bolster his qualifications, he would have to marry a daughter of Thutmose II and Hatshepsut, the royal queen.
Because he was the pharaoh"s only son, Thutmose III would have become the first in line for the throne when Thutmose II died.
After the death of Hatshepsut, Thutmose III ruled Egypt in his own right for thirty years.
Thutmose III had little power over the empire while Hatshepsut exercised the formal authority of kingship.
In keeping with the legend of Horemakhet, Thutmose may well have led the first attempt to restore the Sphinx.
Thutmose III was responsible for building over fifty temples in Egypt and effecting massive additions to Egypt "s chief temple at Karnak .
When Thutmose II died, Thutmose III was still too young to rule, so Hatshepsut became his regent, then his co-regent.
But when he became Pharaoh Thutmose IV, he helped introduce a Sphinx-worshiping cult to the New Kingdom (1550-1070 B. C. ).
Horemakhet then offered Thutmose the throne in exchange for help.