Finding the Third Proportional to 1,431,343 and 3,086,870

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431,343 : 3,086,870 = 3,086,870 : x
2. Step 2: Convert to fraction form
   1,431,343/3,086,870 = 3,086,870/x
3. Step 3: Cross multiply
   1,431,343x = 3,086,870 × 3,086,870
4. Step 4: Simplify right side
   1,431,343x = 9,528,766,396,900
5. Step 5: Solve for x
   x = 9,528,766,396,900/1,431,343
6. Step 6: Final answer
   x = 6,657,220.80