Finding the Third Proportional to 323,822 and 428,322

Step by Step Solution

1. Step 1: Write the proportion equation
   323,822 : 428,322 = 428,322 : x
2. Step 2: Convert to fraction form
   323,822/428,322 = 428,322/x
3. Step 3: Cross multiply
   323,822x = 428,322 × 428,322
4. Step 4: Simplify right side
   323,822x = 183,459,735,684
5. Step 5: Solve for x
   x = 183,459,735,684/323,822
6. Step 6: Final answer
   x = 566,545.00