Finding the Third Proportional to 1,243,704 and 1,865,189

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,704 : 1,865,189 = 1,865,189 : x
2. Step 2: Convert to fraction form
   1,243,704/1,865,189 = 1,865,189/x
3. Step 3: Cross multiply
   1,243,704x = 1,865,189 × 1,865,189
4. Step 4: Simplify right side
   1,243,704x = 3,478,930,005,721
5. Step 5: Solve for x
   x = 3,478,930,005,721/1,243,704
6. Step 6: Final answer
   x = 2,797,233.11