Finding the Third Proportional to 150,579 and 242,149.50

Step by Step Solution

1. Step 1: Write the proportion equation
   150,579 : 242,149.50 = 242,149.50 : x
2. Step 2: Convert to fraction form
   150,579/242,149.50 = 242,149.50/x
3. Step 3: Cross multiply
   150,579x = 242,149.50 × 242,149.50
4. Step 4: Simplify right side
   150,579x = 58,636,380,350.25
5. Step 5: Solve for x
   x = 58,636,380,350.25/150,579
6. Step 6: Final answer
   x = 389,406.09