Finding the Third Proportional to 31,117.50 and 67,176

Step by Step Solution

1. Step 1: Write the proportion equation
   31,117.50 : 67,176 = 67,176 : x
2. Step 2: Convert to fraction form
   31,117.50/67,176 = 67,176/x
3. Step 3: Cross multiply
   31,117.50x = 67,176 × 67,176
4. Step 4: Simplify right side
   31,117.50x = 4,512,614,976
5. Step 5: Solve for x
   x = 4,512,614,976/31,117.50
6. Step 6: Final answer
   x = 145,018.56