  Using the Kondo lattice model with classical spins in infinite dimension,
  magnetic phase transition in the perovskite-type $3d$ transition-metal oxide
(La,Sr)MnO$_3$ is theoretically studied. On the Bethe lattice, the
self-consistency equations are solved exactly. Curie temperatures at the region
of double-exchange ferromagnetism $0.1 < x < 0.25$ as well as the Neel
temperature at $x=0$ are well reproduced quantitatively. Pressure effect on the
Curie temperature is also discussed.
