Finding the Third Proportional to 711,180 and 1,678,806

Step by Step Solution

1. Step 1: Write the proportion equation
   711,180 : 1,678,806 = 1,678,806 : x
2. Step 2: Convert to fraction form
   711,180/1,678,806 = 1,678,806/x
3. Step 3: Cross multiply
   711,180x = 1,678,806 × 1,678,806
4. Step 4: Simplify right side
   711,180x = 2,818,389,585,636
5. Step 5: Solve for x
   x = 2,818,389,585,636/711,180
6. Step 6: Final answer
   x = 3,962,976.44