Finding the Third Proportional to 145,429,123 and 311,013,638

Step by Step Solution

1. Step 1: Write the proportion equation
   145,429,123 : 311,013,638 = 311,013,638 : x
2. Step 2: Convert to fraction form
   145,429,123/311,013,638 = 311,013,638/x
3. Step 3: Cross multiply
   145,429,123x = 311,013,638 × 311,013,638
4. Step 4: Simplify right side
   145,429,123x = 96,729,483,021,995,040
5. Step 5: Solve for x
   x = 96,729,483,021,995,040/145,429,123
6. Step 6: Final answer
   x = 665,131,447.03