Finding the Third Proportional to 303,570 and 660,648

Step by Step Solution

1. Step 1: Write the proportion equation
   303,570 : 660,648 = 660,648 : x
2. Step 2: Convert to fraction form
   303,570/660,648 = 660,648/x
3. Step 3: Cross multiply
   303,570x = 660,648 × 660,648
4. Step 4: Simplify right side
   303,570x = 436,455,779,904
5. Step 5: Solve for x
   x = 436,455,779,904/303,570
6. Step 6: Final answer
   x = 1,437,743.45