Finding the Third Proportional to 31,008 and 67,812

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008 : 67,812 = 67,812 : x
2. Step 2: Convert to fraction form
   31,008/67,812 = 67,812/x
3. Step 3: Cross multiply
   31,008x = 67,812 × 67,812
4. Step 4: Simplify right side
   31,008x = 4,598,467,344
5. Step 5: Solve for x
   x = 4,598,467,344/31,008
6. Step 6: Final answer
   x = 148,299.39