Finding the Third Proportional to 67,272.75 and 142,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,272.75 : 142,744.50 = 142,744.50 : x
2. Step 2: Convert to fraction form
   67,272.75/142,744.50 = 142,744.50/x
3. Step 3: Cross multiply
   67,272.75x = 142,744.50 × 142,744.50
4. Step 4: Simplify right side
   67,272.75x = 20,375,992,280.25
5. Step 5: Solve for x
   x = 20,375,992,280.25/67,272.75
6. Step 6: Final answer
   x = 302,886.27