Finding the Third Proportional to 685,528 and 1,485,468

Step by Step Solution

1. Step 1: Write the proportion equation
   685,528 : 1,485,468 = 1,485,468 : x
2. Step 2: Convert to fraction form
   685,528/1,485,468 = 1,485,468/x
3. Step 3: Cross multiply
   685,528x = 1,485,468 × 1,485,468
4. Step 4: Simplify right side
   685,528x = 2,206,615,179,024
5. Step 5: Solve for x
   x = 2,206,615,179,024/685,528
6. Step 6: Final answer
   x = 3,218,854.92