Finding the Third Proportional to 242,355.38 and 383,580

Step by Step Solution

1. Step 1: Write the proportion equation
   242,355.38 : 383,580 = 383,580 : x
2. Step 2: Convert to fraction form
   242,355.38/383,580 = 383,580/x
3. Step 3: Cross multiply
   242,355.38x = 383,580 × 383,580
4. Step 4: Simplify right side
   242,355.38x = 147,133,616,400
5. Step 5: Solve for x
   x = 147,133,616,400/242,355.38
6. Step 6: Final answer
   x = 607,098.63