Finding the Third Proportional to 2,558,581 and 5,515,722

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558,581 : 5,515,722 = 5,515,722 : x
2. Step 2: Convert to fraction form
   2,558,581/5,515,722 = 5,515,722/x
3. Step 3: Cross multiply
   2,558,581x = 5,515,722 × 5,515,722
4. Step 4: Simplify right side
   2,558,581x = 30,423,189,181,284
5. Step 5: Solve for x
   x = 30,423,189,181,284/2,558,581
6. Step 6: Final answer
   x = 11,890,649.22