Finding the Third Proportional to 196,408 and 300,328

Step by Step Solution

1. Step 1: Write the proportion equation
   196,408 : 300,328 = 300,328 : x
2. Step 2: Convert to fraction form
   196,408/300,328 = 300,328/x
3. Step 3: Cross multiply
   196,408x = 300,328 × 300,328
4. Step 4: Simplify right side
   196,408x = 90,196,907,584
5. Step 5: Solve for x
   x = 90,196,907,584/196,408
6. Step 6: Final answer
   x = 459,232.35