Finding the Third Proportional to 142,487 and 300,994

Step by Step Solution

1. Step 1: Write the proportion equation
   142,487 : 300,994 = 300,994 : x
2. Step 2: Convert to fraction form
   142,487/300,994 = 300,994/x
3. Step 3: Cross multiply
   142,487x = 300,994 × 300,994
4. Step 4: Simplify right side
   142,487x = 90,597,388,036
5. Step 5: Solve for x
   x = 90,597,388,036/142,487
6. Step 6: Final answer
   x = 635,829.15