Finding the Third Proportional to 240,813 and 381,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   240,813 : 381,631.50 = 381,631.50 : x
2. Step 2: Convert to fraction form
   240,813/381,631.50 = 381,631.50/x
3. Step 3: Cross multiply
   240,813x = 381,631.50 × 381,631.50
4. Step 4: Simplify right side
   240,813x = 145,642,601,792.25
5. Step 5: Solve for x
   x = 145,642,601,792.25/240,813
6. Step 6: Final answer
   x = 604,795.43