Finding the Third Proportional to 142,228 and 301,992

Step by Step Solution

1. Step 1: Write the proportion equation
   142,228 : 301,992 = 301,992 : x
2. Step 2: Convert to fraction form
   142,228/301,992 = 301,992/x
3. Step 3: Cross multiply
   142,228x = 301,992 × 301,992
4. Step 4: Simplify right side
   142,228x = 91,199,168,064
5. Step 5: Solve for x
   x = 91,199,168,064/142,228
6. Step 6: Final answer
   x = 641,218.10