Finding the Third Proportional to 2,100,544 and 4,499,978

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,544 : 4,499,978 = 4,499,978 : x
2. Step 2: Convert to fraction form
   2,100,544/4,499,978 = 4,499,978/x
3. Step 3: Cross multiply
   2,100,544x = 4,499,978 × 4,499,978
4. Step 4: Simplify right side
   2,100,544x = 20,249,802,000,484
5. Step 5: Solve for x
   x = 20,249,802,000,484/2,100,544
6. Step 6: Final answer
   x = 9,640,265.57