Finding the Third Proportional to 31,171.50 and 67,263.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,171.50 : 67,263.75 = 67,263.75 : x
2. Step 2: Convert to fraction form
   31,171.50/67,263.75 = 67,263.75/x
3. Step 3: Cross multiply
   31,171.50x = 67,263.75 × 67,263.75
4. Step 4: Simplify right side
   31,171.50x = 4,524,412,064.06
5. Step 5: Solve for x
   x = 4,524,412,064.06/31,171.50
6. Step 6: Final answer
   x = 145,145.79