Finding the Third Proportional to 319,443 and 494,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   319,443 : 494,554.50 = 494,554.50 : x
2. Step 2: Convert to fraction form
   319,443/494,554.50 = 494,554.50/x
3. Step 3: Cross multiply
   319,443x = 494,554.50 × 494,554.50
4. Step 4: Simplify right side
   319,443x = 244,584,153,470.25
5. Step 5: Solve for x
   x = 244,584,153,470.25/319,443
6. Step 6: Final answer
   x = 765,658.20