The global power structure has evolved dramatically since World War II, transitioning from a bipolar world through unipolar dominance to today's multipolar reality. While the United States maintains significant influence, emerging powers like China and Russia, alongside an increasingly assertive Global South, are reshaping international dynamics. This transformation has given rise to ‘Collaborative Coexistence,' where nations prioritize pragmatic cooperation over ideological alignment. Within this context, India's emergence, particularly since 2014, represents a remarkable story of economic growth and diplomatic maturity. The country now stands as an economic competitor to the US and China while pursuing an independent political path, balancing neutrality with active participation in addressing global challenges. Drawing strength from its democratic foundations and multilateral approach, India has gained substantial international influence. Economic projections using ARIMA (Auto Regressive Integrated Moving Average) methodology suggest India's economy could exceed USD 27 trillion by 2050. This paper employs ARIMA (2,1,3) and  examines this trajectory through 2050, arguing that these developments position India to define what may become the 'Indian Century.'