Finding the Third Proportional to 296,221 and 423,300

Step by Step Solution

1. Step 1: Write the proportion equation
   296,221 : 423,300 = 423,300 : x
2. Step 2: Convert to fraction form
   296,221/423,300 = 423,300/x
3. Step 3: Cross multiply
   296,221x = 423,300 × 423,300
4. Step 4: Simplify right side
   296,221x = 179,182,890,000
5. Step 5: Solve for x
   x = 179,182,890,000/296,221
6. Step 6: Final answer
   x = 604,895.97