Finding the Third Proportional to 2,556,504 and 5,570,640

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556,504 : 5,570,640 = 5,570,640 : x
2. Step 2: Convert to fraction form
   2,556,504/5,570,640 = 5,570,640/x
3. Step 3: Cross multiply
   2,556,504x = 5,570,640 × 5,570,640
4. Step 4: Simplify right side
   2,556,504x = 31,032,030,009,600
5. Step 5: Solve for x
   x = 31,032,030,009,600/2,556,504
6. Step 6: Final answer
   x = 12,138,463.31