Answer
$2 × 10^5+9×10^4+4× 10^3 + 8×10^2+6×10^1+3×10^0$
Work Step by Step
$294,863$ is the same thing as $200,000 + 90,000 +4,000+800+60+3$, which is
$2 × 100,000 +9×10,000+4× 1,000 + 8×100+6×10+3×1$
$100,000$ is $10^5$$,10,000 $ is $10^4$, $1,000 $ is $10^3$, $100$ is $10^2$, $10$ is $10^1$ and $1$ is $10^0$, so the answer is
$$\boxed{2 × 10^5+9×10^4+4× 10^3 + 8×10^2+6×10^1+3×10^0}$$
