Find the positive number if are consecutive terms of an arithmetic progression.

MATHEMATICS · Subjective · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms

Problem

Find the positive number xx if log⁡108,  log⁡10x,  log⁡10128\log_{10} 8,\; \log_{10} x,\; \log_{10} 128 are consecutive terms of an arithmetic progression.

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