Finding the Third Proportional to 199,287 and 300,591

Step by Step Solution

1. Step 1: Write the proportion equation
   199,287 : 300,591 = 300,591 : x
2. Step 2: Convert to fraction form
   199,287/300,591 = 300,591/x
3. Step 3: Cross multiply
   199,287x = 300,591 × 300,591
4. Step 4: Simplify right side
   199,287x = 90,354,949,281
5. Step 5: Solve for x
   x = 90,354,949,281/199,287
6. Step 6: Final answer
   x = 453,391.09