Finding the Third Proportional to 147,908,814 and 315,603,960

Step by Step Solution

1. Step 1: Write the proportion equation
   147,908,814 : 315,603,960 = 315,603,960 : x
2. Step 2: Convert to fraction form
   147,908,814/315,603,960 = 315,603,960/x
3. Step 3: Cross multiply
   147,908,814x = 315,603,960 × 315,603,960
4. Step 4: Simplify right side
   147,908,814x = 99,605,859,567,681,600
5. Step 5: Solve for x
   x = 99,605,859,567,681,600/147,908,814
6. Step 6: Final answer
   x = 673,427,477.88