Finding the Third Proportional to 287,304 and 384,282

Step by Step Solution

1. Step 1: Write the proportion equation
   287,304 : 384,282 = 384,282 : x
2. Step 2: Convert to fraction form
   287,304/384,282 = 384,282/x
3. Step 3: Cross multiply
   287,304x = 384,282 × 384,282
4. Step 4: Simplify right side
   287,304x = 147,672,655,524
5. Step 5: Solve for x
   x = 147,672,655,524/287,304
6. Step 6: Final answer
   x = 513,994.43