Finding the Third Proportional to 1,217,234 and 1,780,779

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,234 : 1,780,779 = 1,780,779 : x
2. Step 2: Convert to fraction form
   1,217,234/1,780,779 = 1,780,779/x
3. Step 3: Cross multiply
   1,217,234x = 1,780,779 × 1,780,779
4. Step 4: Simplify right side
   1,217,234x = 3,171,173,846,841
5. Step 5: Solve for x
   x = 3,171,173,846,841/1,217,234
6. Step 6: Final answer
   x = 2,605,229.44