Finding the Third Proportional to 245,872.50 and 379,728

Step by Step Solution

1. Step 1: Write the proportion equation
   245,872.50 : 379,728 = 379,728 : x
2. Step 2: Convert to fraction form
   245,872.50/379,728 = 379,728/x
3. Step 3: Cross multiply
   245,872.50x = 379,728 × 379,728
4. Step 4: Simplify right side
   245,872.50x = 144,193,353,984
5. Step 5: Solve for x
   x = 144,193,353,984/245,872.50
6. Step 6: Final answer
   x = 586,455.80