Finding the Third Proportional to 31,208,878 and 67,735,928

Step by Step Solution

1. Step 1: Write the proportion equation
   31,208,878 : 67,735,928 = 67,735,928 : x
2. Step 2: Convert to fraction form
   31,208,878/67,735,928 = 67,735,928/x
3. Step 3: Cross multiply
   31,208,878x = 67,735,928 × 67,735,928
4. Step 4: Simplify right side
   31,208,878x = 4,588,155,942,021,184
5. Step 5: Solve for x
   x = 4,588,155,942,021,184/31,208,878
6. Step 6: Final answer
   x = 147,014,447.04