Finding the Third Proportional to 2,563,080 and 5,457,456

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563,080 : 5,457,456 = 5,457,456 : x
2. Step 2: Convert to fraction form
   2,563,080/5,457,456 = 5,457,456/x
3. Step 3: Cross multiply
   2,563,080x = 5,457,456 × 5,457,456
4. Step 4: Simplify right side
   2,563,080x = 29,783,825,991,936
5. Step 5: Solve for x
   x = 29,783,825,991,936/2,563,080
6. Step 6: Final answer
   x = 11,620,326.32