Finding the Third Proportional to 31,900.50 and 68,676

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900.50 : 68,676 = 68,676 : x
2. Step 2: Convert to fraction form
   31,900.50/68,676 = 68,676/x
3. Step 3: Cross multiply
   31,900.50x = 68,676 × 68,676
4. Step 4: Simplify right side
   31,900.50x = 4,716,392,976
5. Step 5: Solve for x
   x = 4,716,392,976/31,900.50
6. Step 6: Final answer
   x = 147,846.99