Finding the Third Proportional to 31,013,187 and 68,187,558

Step by Step Solution

1. Step 1: Write the proportion equation
   31,013,187 : 68,187,558 = 68,187,558 : x
2. Step 2: Convert to fraction form
   31,013,187/68,187,558 = 68,187,558/x
3. Step 3: Cross multiply
   31,013,187x = 68,187,558 × 68,187,558
4. Step 4: Simplify right side
   31,013,187x = 4,649,543,066,003,364
5. Step 5: Solve for x
   x = 4,649,543,066,003,364/31,013,187
6. Step 6: Final answer
   x = 149,921,485.53