Finding the Third Proportional to 296,357.50 and 423,488

Step by Step Solution

1. Step 1: Write the proportion equation
   296,357.50 : 423,488 = 423,488 : x
2. Step 2: Convert to fraction form
   296,357.50/423,488 = 423,488/x
3. Step 3: Cross multiply
   296,357.50x = 423,488 × 423,488
4. Step 4: Simplify right side
   296,357.50x = 179,342,086,144
5. Step 5: Solve for x
   x = 179,342,086,144/296,357.50
6. Step 6: Final answer
   x = 605,154.54