Finding the Third Proportional to 142,168 and 301,830

Step by Step Solution

1. Step 1: Write the proportion equation
   142,168 : 301,830 = 301,830 : x
2. Step 2: Convert to fraction form
   142,168/301,830 = 301,830/x
3. Step 3: Cross multiply
   142,168x = 301,830 × 301,830
4. Step 4: Simplify right side
   142,168x = 91,101,348,900
5. Step 5: Solve for x
   x = 91,101,348,900/142,168
6. Step 6: Final answer
   x = 640,800.66