Finding the Third Proportional to 7,836,156 and 12,108,861

Step by Step Solution

1. Step 1: Write the proportion equation
   7,836,156 : 12,108,861 = 12,108,861 : x
2. Step 2: Convert to fraction form
   7,836,156/12,108,861 = 12,108,861/x
3. Step 3: Cross multiply
   7,836,156x = 12,108,861 × 12,108,861
4. Step 4: Simplify right side
   7,836,156x = 146,624,514,717,321
5. Step 5: Solve for x
   x = 146,624,514,717,321/7,836,156
6. Step 6: Final answer
   x = 18,711,280.72