Finding the Third Proportional to 1,248,243 and 2,686,089

Step by Step Solution

1. Step 1: Write the proportion equation
   1,248,243 : 2,686,089 = 2,686,089 : x
2. Step 2: Convert to fraction form
   1,248,243/2,686,089 = 2,686,089/x
3. Step 3: Cross multiply
   1,248,243x = 2,686,089 × 2,686,089
4. Step 4: Simplify right side
   1,248,243x = 7,215,074,115,921
5. Step 5: Solve for x
   x = 7,215,074,115,921/1,248,243
6. Step 6: Final answer
   x = 5,780,183.92