Finding the Third Proportional to 31,231.50 and 67,448.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,231.50 : 67,448.25 = 67,448.25 : x
2. Step 2: Convert to fraction form
   31,231.50/67,448.25 = 67,448.25/x
3. Step 3: Cross multiply
   31,231.50x = 67,448.25 × 67,448.25
4. Step 4: Simplify right side
   31,231.50x = 4,549,266,428.06
5. Step 5: Solve for x
   x = 4,549,266,428.06/31,231.50
6. Step 6: Final answer
   x = 145,662.76