Finding the Third Proportional to 250,333.50 and 387,378

Step by Step Solution

1. Step 1: Write the proportion equation
   250,333.50 : 387,378 = 387,378 : x
2. Step 2: Convert to fraction form
   250,333.50/387,378 = 387,378/x
3. Step 3: Cross multiply
   250,333.50x = 387,378 × 387,378
4. Step 4: Simplify right side
   250,333.50x = 150,061,714,884
5. Step 5: Solve for x
   x = 150,061,714,884/250,333.50
6. Step 6: Final answer
   x = 599,447.20