Finding the Third Proportional to 31,473,134 and 67,729,243

Step by Step Solution

1. Step 1: Write the proportion equation
   31,473,134 : 67,729,243 = 67,729,243 : x
2. Step 2: Convert to fraction form
   31,473,134/67,729,243 = 67,729,243/x
3. Step 3: Cross multiply
   31,473,134x = 67,729,243 × 67,729,243
4. Step 4: Simplify right side
   31,473,134x = 4,587,250,357,353,049
5. Step 5: Solve for x
   x = 4,587,250,357,353,049/31,473,134
6. Step 6: Final answer
   x = 145,751,305.14