Finding the Third Proportional to 2,515,819 and 5,525,878

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515,819 : 5,525,878 = 5,525,878 : x
2. Step 2: Convert to fraction form
   2,515,819/5,525,878 = 5,525,878/x
3. Step 3: Cross multiply
   2,515,819x = 5,525,878 × 5,525,878
4. Step 4: Simplify right side
   2,515,819x = 30,535,327,670,884
5. Step 5: Solve for x
   x = 30,535,327,670,884/2,515,819
6. Step 6: Final answer
   x = 12,137,330.89