Finding the Third Proportional to 2,556,939 and 5,681,436

Step by Step Solution

1. Step 1: Write the proportion equation
   2,556,939 : 5,681,436 = 5,681,436 : x
2. Step 2: Convert to fraction form
   2,556,939/5,681,436 = 5,681,436/x
3. Step 3: Cross multiply
   2,556,939x = 5,681,436 × 5,681,436
4. Step 4: Simplify right side
   2,556,939x = 32,278,715,022,096
5. Step 5: Solve for x
   x = 32,278,715,022,096/2,556,939
6. Step 6: Final answer
   x = 12,623,967.57