Finding the Third Proportional to 142,306 and 300,285

Step by Step Solution

1. Step 1: Write the proportion equation
   142,306 : 300,285 = 300,285 : x
2. Step 2: Convert to fraction form
   142,306/300,285 = 300,285/x
3. Step 3: Cross multiply
   142,306x = 300,285 × 300,285
4. Step 4: Simplify right side
   142,306x = 90,171,081,225
5. Step 5: Solve for x
   x = 90,171,081,225/142,306
6. Step 6: Final answer
   x = 633,642.16