Finding the Third Proportional to 1,239,618 and 1,915,491

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239,618 : 1,915,491 = 1,915,491 : x
2. Step 2: Convert to fraction form
   1,239,618/1,915,491 = 1,915,491/x
3. Step 3: Cross multiply
   1,239,618x = 1,915,491 × 1,915,491
4. Step 4: Simplify right side
   1,239,618x = 3,669,105,771,081
5. Step 5: Solve for x
   x = 3,669,105,771,081/1,239,618
6. Step 6: Final answer
   x = 2,959,868.10