Finding the Third Proportional to 685,623 and 1,476,606

Step by Step Solution

1. Step 1: Write the proportion equation
   685,623 : 1,476,606 = 1,476,606 : x
2. Step 2: Convert to fraction form
   685,623/1,476,606 = 1,476,606/x
3. Step 3: Cross multiply
   685,623x = 1,476,606 × 1,476,606
4. Step 4: Simplify right side
   685,623x = 2,180,365,279,236
5. Step 5: Solve for x
   x = 2,180,365,279,236/685,623
6. Step 6: Final answer
   x = 3,180,122.72