Finding the Third Proportional to 2,556,521 and 5,570,674

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556,521 : 5,570,674 = 5,570,674 : x
2. Step 2: Convert to fraction form
   2,556,521/5,570,674 = 5,570,674/x
3. Step 3: Cross multiply
   2,556,521x = 5,570,674 × 5,570,674
4. Step 4: Simplify right side
   2,556,521x = 31,032,408,814,276
5. Step 5: Solve for x
   x = 31,032,408,814,276/2,556,521
6. Step 6: Final answer
   x = 12,138,530.77