Finding the Third Proportional to 196,387 and 300,287

Step by Step Solution

1. Step 1: Write the proportion equation
   196,387 : 300,287 = 300,287 : x
2. Step 2: Convert to fraction form
   196,387/300,287 = 300,287/x
3. Step 3: Cross multiply
   196,387x = 300,287 × 300,287
4. Step 4: Simplify right side
   196,387x = 90,172,282,369
5. Step 5: Solve for x
   x = 90,172,282,369/196,387
6. Step 6: Final answer
   x = 459,156.07