Finding the Third Proportional to 2,455,476 and 5,356,978

Step by Step Solution

1. Step 1: Write the proportion equation
   2,455,476 : 5,356,978 = 5,356,978 : x
2. Step 2: Convert to fraction form
   2,455,476/5,356,978 = 5,356,978/x
3. Step 3: Cross multiply
   2,455,476x = 5,356,978 × 5,356,978
4. Step 4: Simplify right side
   2,455,476x = 28,697,213,292,484
5. Step 5: Solve for x
   x = 28,697,213,292,484/2,455,476
6. Step 6: Final answer
   x = 11,687,026.59