Saw a star the held position and then moved.

Walking from my shop to my house I looked up in the blue sky and saw 5 white shapes I would guess to be around 5000 feet up in the sky.
I thought they were Egret birds but extremely high. So I ran inside and got my binoculars and took a look. With my arm leaning against my house eve column in the backyard I saw 5 large plastic white bags billowing in the sky going higher. I thought .. hmm must be full of helium gas or something.... then above the floating balloon bags I see a star above them. I think... this must be a Satellite with sun reflecting off of the solar panels because its 3pm in the afternoon and how can I see a Star? But the star is not moving, so it can't be Star. I keep watching and then.... it starts moving slowly across the sky and I follow with my binoculars. Then... wow... it takes off like crazy... like Mach 10.... so fast I lost my balance on the house porch column and slipped off. When I put binoculars back up it was gone.