Finding the Third Proportional to 31,473,128 and 67,729,227

Step by Step Solution

1. Step 1: Write the proportion equation
   31,473,128 : 67,729,227 = 67,729,227 : x
2. Step 2: Convert to fraction form
   31,473,128/67,729,227 = 67,729,227/x
3. Step 3: Cross multiply
   31,473,128x = 67,729,227 × 67,729,227
4. Step 4: Simplify right side
   31,473,128x = 4,587,248,190,017,529
5. Step 5: Solve for x
   x = 4,587,248,190,017,529/31,473,128
6. Step 6: Final answer
   x = 145,751,264.06