Why would your Dr want to induce you? Women give birth to 10lb babies everyday. My first son was 9lb 7oz and he was as difficult to deliver as my 7lb 9oz daughter and my 7lb 10oz son... so there is no reason why you can't deliver a healthy 10lb baby too.
Just have faith in your body... you said you have delivered a 9lb baby before... it will be no different to delivering that baby.... it could actually be easier because you have BTDT before.
That said, I was told the whole was through my pregnancy with Harrison that I was measuring large for dates, and told my baby would be a huge one... one midwife was a little worried about it too... but as it turned out, he was a healthy 7lb 10oz baby, not the gigantic baby they had imagined him to be.