Finding the Third Proportional to 296,364 and 423,499

Step by Step Solution

1. Step 1: Write the proportion equation
   296,364 : 423,499 = 423,499 : x
2. Step 2: Convert to fraction form
   296,364/423,499 = 423,499/x
3. Step 3: Cross multiply
   296,364x = 423,499 × 423,499
4. Step 4: Simplify right side
   296,364x = 179,351,403,001
5. Step 5: Solve for x
   x = 179,351,403,001/296,364
6. Step 6: Final answer
   x = 605,172.70