Finding the Third Proportional to 31,151.94 and 68,531.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,151.94 : 68,531.70 = 68,531.70 : x
2. Step 2: Convert to fraction form
   31,151.94/68,531.70 = 68,531.70/x
3. Step 3: Cross multiply
   31,151.94x = 68,531.70 × 68,531.70
4. Step 4: Simplify right side
   31,151.94x = 4,696,593,262.41
5. Step 5: Solve for x
   x = 4,696,593,262.41/31,151.94
6. Step 6: Final answer
   x = 150,764.09