Finding the Third Proportional to 2,129,895 and 4,584,561

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,895 : 4,584,561 = 4,584,561 : x
2. Step 2: Convert to fraction form
   2,129,895/4,584,561 = 4,584,561/x
3. Step 3: Cross multiply
   2,129,895x = 4,584,561 × 4,584,561
4. Step 4: Simplify right side
   2,129,895x = 21,018,199,562,721
5. Step 5: Solve for x
   x = 21,018,199,562,721/2,129,895
6. Step 6: Final answer
   x = 9,868,185.79