Finding the Third Proportional to 31,243,612 and 67,683,608

Step by Step Solution

1. Step 1: Write the proportion equation
   31,243,612 : 67,683,608 = 67,683,608 : x
2. Step 2: Convert to fraction form
   31,243,612/67,683,608 = 67,683,608/x
3. Step 3: Cross multiply
   31,243,612x = 67,683,608 × 67,683,608
4. Step 4: Simplify right side
   31,243,612x = 4,581,070,791,897,664
5. Step 5: Solve for x
   x = 4,581,070,791,897,664/31,243,612
6. Step 6: Final answer
   x = 146,624,237.68