Finding the Third Proportional to 145,153.50 and 311,043

Step by Step Solution

1. Step 1: Write the proportion equation
   145,153.50 : 311,043 = 311,043 : x
2. Step 2: Convert to fraction form
   145,153.50/311,043 = 311,043/x
3. Step 3: Cross multiply
   145,153.50x = 311,043 × 311,043
4. Step 4: Simplify right side
   145,153.50x = 96,747,747,849
5. Step 5: Solve for x
   x = 96,747,747,849/145,153.50
6. Step 6: Final answer
   x = 666,520.26