Finding the Third Proportional to 240,660 and 381,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   240,660 : 381,403.50 = 381,403.50 : x
2. Step 2: Convert to fraction form
   240,660/381,403.50 = 381,403.50/x
3. Step 3: Cross multiply
   240,660x = 381,403.50 × 381,403.50
4. Step 4: Simplify right side
   240,660x = 145,468,629,812.25
5. Step 5: Solve for x
   x = 145,468,629,812.25/240,660
6. Step 6: Final answer
   x = 604,457.03