Finding the Third Proportional to 216,476 and 323,834

Step by Step Solution

1. Step 1: Write the proportion equation
   216,476 : 323,834 = 323,834 : x
2. Step 2: Convert to fraction form
   216,476/323,834 = 323,834/x
3. Step 3: Cross multiply
   216,476x = 323,834 × 323,834
4. Step 4: Simplify right side
   216,476x = 104,868,459,556
5. Step 5: Solve for x
   x = 104,868,459,556/216,476
6. Step 6: Final answer
   x = 484,434.58