Finding the Third Proportional to 1,490,842 and 1,986,278

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490,842 : 1,986,278 = 1,986,278 : x
2. Step 2: Convert to fraction form
   1,490,842/1,986,278 = 1,986,278/x
3. Step 3: Cross multiply
   1,490,842x = 1,986,278 × 1,986,278
4. Step 4: Simplify right side
   1,490,842x = 3,945,300,293,284
5. Step 5: Solve for x
   x = 3,945,300,293,284/1,490,842
6. Step 6: Final answer
   x = 2,646,357.09