Finding the Third Proportional to 196,420.50 and 300,339

Step by Step Solution

1. Step 1: Write the proportion equation
   196,420.50 : 300,339 = 300,339 : x
2. Step 2: Convert to fraction form
   196,420.50/300,339 = 300,339/x
3. Step 3: Cross multiply
   196,420.50x = 300,339 × 300,339
4. Step 4: Simplify right side
   196,420.50x = 90,203,514,921
5. Step 5: Solve for x
   x = 90,203,514,921/196,420.50
6. Step 6: Final answer
   x = 459,236.76