Finding the Third Proportional to 303,316.50 and 660,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,316.50 : 660,142.50 = 660,142.50 : x
2. Step 2: Convert to fraction form
   303,316.50/660,142.50 = 660,142.50/x
3. Step 3: Cross multiply
   303,316.50x = 660,142.50 × 660,142.50
4. Step 4: Simplify right side
   303,316.50x = 435,788,120,306.25
5. Step 5: Solve for x
   x = 435,788,120,306.25/303,316.50
6. Step 6: Final answer
   x = 1,436,743.86