Finding the Third Proportional to 145,571 and 318,296.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,571 : 318,296.50 = 318,296.50 : x
2. Step 2: Convert to fraction form
   145,571/318,296.50 = 318,296.50/x
3. Step 3: Cross multiply
   145,571x = 318,296.50 × 318,296.50
4. Step 4: Simplify right side
   145,571x = 101,312,661,912.25
5. Step 5: Solve for x
   x = 101,312,661,912.25/145,571
6. Step 6: Final answer
   x = 695,967.34