Finding the Third Proportional to 303,180 and 660,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,180 : 660,147.50 = 660,147.50 : x
2. Step 2: Convert to fraction form
   303,180/660,147.50 = 660,147.50/x
3. Step 3: Cross multiply
   303,180x = 660,147.50 × 660,147.50
4. Step 4: Simplify right side
   303,180x = 435,794,721,756.25
5. Step 5: Solve for x
   x = 435,794,721,756.25/303,180
6. Step 6: Final answer
   x = 1,437,412.50