Finding the Third Proportional to 1,238,466 and 2,561,888

Step by Step Solution

1. Step 1: Write the proportion equation
   1,238,466 : 2,561,888 = 2,561,888 : x
2. Step 2: Convert to fraction form
   1,238,466/2,561,888 = 2,561,888/x
3. Step 3: Cross multiply
   1,238,466x = 2,561,888 × 2,561,888
4. Step 4: Simplify right side
   1,238,466x = 6,563,270,124,544
5. Step 5: Solve for x
   x = 6,563,270,124,544/1,238,466
6. Step 6: Final answer
   x = 5,299,515.79