input: Write a python function to calculate the magnitude of the cross product of two 3D vectors.
  assert cross_product_magnitude([1, 0, 0], [0, 1, 0]) == 1.0
  assert cross_product_magnitude([1, 2, 3], [4, 5, 6]) == math.sqrt(27)
  assert cross_product_magnitude([2, 3, 4], [5, 6, 7]) == math.sqrt(27)
output: import math
  
  def cross_product_magnitude(v1, v2):
      cx = v1[1] * v2[2] - v1[2] * v2[1]
      cy = v1[2] * v2[0] - v1[0] * v2[2]
      cz = v1[0] * v2[1] - v1[1] * v2[0]
      return math.sqrt(cx**2 + cy**2 + cz**2)