Finding the Third Proportional to 2,586,430 and 5,620,544

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,430 : 5,620,544 = 5,620,544 : x
2. Step 2: Convert to fraction form
   2,586,430/5,620,544 = 5,620,544/x
3. Step 3: Cross multiply
   2,586,430x = 5,620,544 × 5,620,544
4. Step 4: Simplify right side
   2,586,430x = 31,590,514,855,936
5. Step 5: Solve for x
   x = 31,590,514,855,936/2,586,430
6. Step 6: Final answer
   x = 12,213,945.42