Finding the Third Proportional to 1,428,806 and 2,176,706

Step by Step Solution

1. Step 1: Write the proportion equation
   1,428,806 : 2,176,706 = 2,176,706 : x
2. Step 2: Convert to fraction form
   1,428,806/2,176,706 = 2,176,706/x
3. Step 3: Cross multiply
   1,428,806x = 2,176,706 × 2,176,706
4. Step 4: Simplify right side
   1,428,806x = 4,738,049,010,436
5. Step 5: Solve for x
   x = 4,738,049,010,436/1,428,806
6. Step 6: Final answer
   x = 3,316,089.81