Finding the Third Proportional to 685,538 and 1,476,340

Step by Step Solution

1. Step 1: Write the proportion equation
   685,538 : 1,476,340 = 1,476,340 : x
2. Step 2: Convert to fraction form
   685,538/1,476,340 = 1,476,340/x
3. Step 3: Cross multiply
   685,538x = 1,476,340 × 1,476,340
4. Step 4: Simplify right side
   685,538x = 2,179,579,795,600
5. Step 5: Solve for x
   x = 2,179,579,795,600/685,538
6. Step 6: Final answer
   x = 3,179,371.23