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Oh, and another thing....the Solar System doesn't orbit the Great Attractor. The Great Attractor is a massive group of galaxy superclusters in the direction of Centaurus-Hydra and about 500Mly away. The Milky Way and the rest of the galaxies in the general neighbourhood, including the Virgo Supercluster (of which we're an outlier galaxy) is streaming towards that general direction, but hardly orbiting it.
The Solar System orbits the centre of the Galaxy once every 250 million years (that's the new figure...the one you quoted (226Ma...actually 225Ma) is out of date despite still being oft quoted and in textbooks).
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