Finding the Third Proportional to 67,270.50 and 142,740.56

Step by Step Solution

1. Step 1: Write the proportion equation
   67,270.50 : 142,740.56 = 142,740.56 : x
2. Step 2: Convert to fraction form
   67,270.50/142,740.56 = 142,740.56/x
3. Step 3: Cross multiply
   67,270.50x = 142,740.56 × 142,740.56
4. Step 4: Simplify right side
   67,270.50x = 20,374,868,182.82
5. Step 5: Solve for x
   x = 20,374,868,182.82/67,270.50
6. Step 6: Final answer
   x = 302,879.69