Finding the Third Proportional to 31,049,042,888 and 67,538,199,368

Step by Step Solution

1. Step 1: Write the proportion equation
   31,049,042,888 : 67,538,199,368 = 67,538,199,368 : x
2. Step 2: Convert to fraction form
   31,049,042,888/67,538,199,368 = 67,538,199,368/x
3. Step 3: Cross multiply
   31,049,042,888x = 67,538,199,368 × 67,538,199,368
4. Step 4: Simplify right side
   31,049,042,888x = 4,561,408,373,871,715,811,328
5. Step 5: Solve for x
   x = 4,561,408,373,871,715,811,328/31,049,042,888
6. Step 6: Final answer
   x = 146,909,790,112.55