📱 Cross Multiplication Calculator – Simple & Real-Time

Solve A : B = C : D instantly! Enter A, B, and C to get D in real time.

✨ Features:
• Real-time calculation as you type
• Simple, clean, easy-to-use design
• Prevents errors & handles empty fields
• Number-only input for accuracy
• Works offline, lightweight and fast

💡 How It Works:
If A = B, then C = ? → D = (B × C) / A