Finding the Third Proportional to 1,112,618 and 2,278,129

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112,618 : 2,278,129 = 2,278,129 : x
2. Step 2: Convert to fraction form
   1,112,618/2,278,129 = 2,278,129/x
3. Step 3: Cross multiply
   1,112,618x = 2,278,129 × 2,278,129
4. Step 4: Simplify right side
   1,112,618x = 5,189,871,740,641
5. Step 5: Solve for x
   x = 5,189,871,740,641/1,112,618
6. Step 6: Final answer
   x = 4,664,558.49