Finding the Third Proportional to 31,296,938 and 67,221,556

Step by Step Solution

1. Step 1: Write the proportion equation
   31,296,938 : 67,221,556 = 67,221,556 : x
2. Step 2: Convert to fraction form
   31,296,938/67,221,556 = 67,221,556/x
3. Step 3: Cross multiply
   31,296,938x = 67,221,556 × 67,221,556
4. Step 4: Simplify right side
   31,296,938x = 4,518,737,591,061,136
5. Step 5: Solve for x
   x = 4,518,737,591,061,136/31,296,938
6. Step 6: Final answer
   x = 144,382,737.73