The inverted geometric chain — Visualizing the completion of the square III

R1 (outer sphere 150) → C1 = 2R1/√3 (inscribed cube) → R2 = C1/2 (inscribed sphere) → C2 = 2R2/√3 (inner cube) Each shape is mathematically inscribed within the previous one — The series tends toward zero inwards — not as an end, but as a pivot — and extends without bound outwards. Two unreachable horizons, structurally symmetric, of the same nature —. This is the same figure as version II, but read in the opposite direction.