Finding the Third Proportional to 73,980 and 144,270

Step by Step Solution

1. Step 1: Write the proportion equation
   73,980 : 144,270 = 144,270 : x
2. Step 2: Convert to fraction form
   73,980/144,270 = 144,270/x
3. Step 3: Cross multiply
   73,980x = 144,270 × 144,270
4. Step 4: Simplify right side
   73,980x = 20,813,832,900
5. Step 5: Solve for x
   x = 20,813,832,900/73,980
6. Step 6: Final answer
   x = 281,344.05