Finding the Third Proportional to 147,908,823 and 315,603,978

Step by Step Solution

1. Step 1: Write the proportion equation
   147,908,823 : 315,603,978 = 315,603,978 : x
2. Step 2: Convert to fraction form
   147,908,823/315,603,978 = 315,603,978/x
3. Step 3: Cross multiply
   147,908,823x = 315,603,978 × 315,603,978
4. Step 4: Simplify right side
   147,908,823x = 99,605,870,929,424,480
5. Step 5: Solve for x
   x = 99,605,870,929,424,480/147,908,823
6. Step 6: Final answer
   x = 673,427,513.72