Finding the Third Proportional to 199,684 and 300,340

Step by Step Solution

1. Step 1: Write the proportion equation
   199,684 : 300,340 = 300,340 : x
2. Step 2: Convert to fraction form
   199,684/300,340 = 300,340/x
3. Step 3: Cross multiply
   199,684x = 300,340 × 300,340
4. Step 4: Simplify right side
   199,684x = 90,204,115,600
5. Step 5: Solve for x
   x = 90,204,115,600/199,684
6. Step 6: Final answer
   x = 451,734.32