Finding the Third Proportional to 155,308.50 and 245,477

Step by Step Solution

1. Step 1: Write the proportion equation
   155,308.50 : 245,477 = 245,477 : x
2. Step 2: Convert to fraction form
   155,308.50/245,477 = 245,477/x
3. Step 3: Cross multiply
   155,308.50x = 245,477 × 245,477
4. Step 4: Simplify right side
   155,308.50x = 60,258,957,529
5. Step 5: Solve for x
   x = 60,258,957,529/155,308.50
6. Step 6: Final answer
   x = 387,995.23