Finding the Third Proportional to 4,991,503 and 7,667,561

Step by Step Solution

1. Step 1: Write the proportion equation
   4,991,503 : 7,667,561 = 7,667,561 : x
2. Step 2: Convert to fraction form
   4,991,503/7,667,561 = 7,667,561/x
3. Step 3: Cross multiply
   4,991,503x = 7,667,561 × 7,667,561
4. Step 4: Simplify right side
   4,991,503x = 58,791,491,688,721
5. Step 5: Solve for x
   x = 58,791,491,688,721/4,991,503
6. Step 6: Final answer
   x = 11,778,314.41