Finding the Third Proportional to 5,149,683 and 7,790,811

Step by Step Solution

1. Step 1: Write the proportion equation
   5,149,683 : 7,790,811 = 7,790,811 : x
2. Step 2: Convert to fraction form
   5,149,683/7,790,811 = 7,790,811/x
3. Step 3: Cross multiply
   5,149,683x = 7,790,811 × 7,790,811
4. Step 4: Simplify right side
   5,149,683x = 60,696,736,037,721
5. Step 5: Solve for x
   x = 60,696,736,037,721/5,149,683
6. Step 6: Final answer
   x = 11,786,499.49