Finding the Third Proportional to 152,638 and 331,548

Step by Step Solution

1. Step 1: Write the proportion equation
   152,638 : 331,548 = 331,548 : x
2. Step 2: Convert to fraction form
   152,638/331,548 = 331,548/x
3. Step 3: Cross multiply
   152,638x = 331,548 × 331,548
4. Step 4: Simplify right side
   152,638x = 109,924,076,304
5. Step 5: Solve for x
   x = 109,924,076,304/152,638
6. Step 6: Final answer
   x = 720,161.93