Finding the Third Proportional to 685,898 and 1,507,580

Step by Step Solution

1. Step 1: Write the proportion equation
   685,898 : 1,507,580 = 1,507,580 : x
2. Step 2: Convert to fraction form
   685,898/1,507,580 = 1,507,580/x
3. Step 3: Cross multiply
   685,898x = 1,507,580 × 1,507,580
4. Step 4: Simplify right side
   685,898x = 2,272,797,456,400
5. Step 5: Solve for x
   x = 2,272,797,456,400/685,898
6. Step 6: Final answer
   x = 3,313,608.52