Finding the Third Proportional to 31,118.25 and 67,487.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,118.25 : 67,487.25 = 67,487.25 : x
2. Step 2: Convert to fraction form
   31,118.25/67,487.25 = 67,487.25/x
3. Step 3: Cross multiply
   31,118.25x = 67,487.25 × 67,487.25
4. Step 4: Simplify right side
   31,118.25x = 4,554,528,912.56
5. Step 5: Solve for x
   x = 4,554,528,912.56/31,118.25
6. Step 6: Final answer
   x = 146,361.99