Finding the Third Proportional to 31,885,544,474.72 and 68,503,006,390.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,885,544,474.72 : 68,503,006,390.78 = 68,503,006,390.78 : x
2. Step 2: Convert to fraction form
   31,885,544,474.72/68,503,006,390.78 = 68,503,006,390.78/x
3. Step 3: Cross multiply
   31,885,544,474.72x = 68,503,006,390.78 × 68,503,006,390.78
4. Step 4: Simplify right side
   31,885,544,474.72x = 4,692,661,884,575,108,562,944
5. Step 5: Solve for x
   x = 4,692,661,884,575,108,562,944/31,885,544,474.72
6. Step 6: Final answer
   x = 147,172,079,444.84