Finding the Third Proportional to 142,263 and 302,049

Step by Step Solution

1. Step 1: Write the proportion equation
   142,263 : 302,049 = 302,049 : x
2. Step 2: Convert to fraction form
   142,263/302,049 = 302,049/x
3. Step 3: Cross multiply
   142,263x = 302,049 × 302,049
4. Step 4: Simplify right side
   142,263x = 91,233,598,401
5. Step 5: Solve for x
   x = 91,233,598,401/142,263
6. Step 6: Final answer
   x = 641,302.37