According to the IDC, Xiaomi shipped 17.3 million handsets in Q3, while Lenovo managed 16.9 million by itself. Unfortunately, the exact number of Motorola handsets sold is unknown, but it's obviously enough to tip the numbers in Lenovorola's favor. That said, Xiaomi has seen growth rates explode in the past year, so it's uncertain if the new alliance will hold onto its third spot for long. We'll live and we'll see.
source: @rosterloh via BGR, IDC