Finding the Third Proportional to 303,570 and 657,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   303,570 : 657,436.50 = 657,436.50 : x
2. Step 2: Convert to fraction form
   303,570/657,436.50 = 657,436.50/x
3. Step 3: Cross multiply
   303,570x = 657,436.50 × 657,436.50
4. Step 4: Simplify right side
   303,570x = 432,222,751,532.25
5. Step 5: Solve for x
   x = 432,222,751,532.25/303,570
6. Step 6: Final answer
   x = 1,423,799.29