Answer:
first part
Initial outlay = -$500,000
10 future cash flows = $70,000
PV of 10 future cash flows = $70,000 x 5.6502 (PVIFA, 12%, 10 periods) = $395,514
NPV = -$500,000 + $395,514 = -$104,486
the project will be rejected
second part
in order to have an NPV ≥ 0
annual cash flow = $500,000 / 5.6502 = $88,492.45 or higher