Finding the Third Proportional to 31,903,517,240 and 69,811,101,856

Step by Step Solution

1. Step 1: Write the proportion equation
   31,903,517,240 : 69,811,101,856 = 69,811,101,856 : x
2. Step 2: Convert to fraction form
   31,903,517,240/69,811,101,856 = 69,811,101,856/x
3. Step 3: Cross multiply
   31,903,517,240x = 69,811,101,856 × 69,811,101,856
4. Step 4: Simplify right side
   31,903,517,240x = 4,873,589,942,348,807,143,424
5. Step 5: Solve for x
   x = 4,873,589,942,348,807,143,424/31,903,517,240
6. Step 6: Final answer
   x = 152,760,271,091.31