Finding the Third Proportional to 1,211,618 and 1,900,830

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211,618 : 1,900,830 = 1,900,830 : x
2. Step 2: Convert to fraction form
   1,211,618/1,900,830 = 1,900,830/x
3. Step 3: Cross multiply
   1,211,618x = 1,900,830 × 1,900,830
4. Step 4: Simplify right side
   1,211,618x = 3,613,154,688,900
5. Step 5: Solve for x
   x = 3,613,154,688,900/1,211,618
6. Step 6: Final answer
   x = 2,982,090.63