There exists a spherical planet about the size of the Earth with a uniform density of 5000 kg/m³. A hole (negligible mass removed) is drilled through the diameter of the planet so that objects can be dropped and freely fall. A bowling ball is lowered into the hole to a height of 1,000,000 m above the center of the planet where it is released from rest. How far away is the ball from where it was released after 3 hours? (Assume the planet is completely at rest.)

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