1. The problem is to convert 50 kilometers (km) to centimeters (cm). 2. We use the conversion factors: 1 km = 1000 meters (m) and 1 m = 100 centimeters (cm). 3. First, convert kilometers to meters: $50 \text{ km} = 50 \times 1000 = 50000 \text{ m}$ 4. Next, convert meters to centimeters: $50000 \text{ m} = 50000 \times 100 = 5000000 \text{ cm}$ 5. Therefore, 50 km equals 5000000 cm.