Finding the Third Proportional to 3,805,558 and 5,218,443

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805,558 : 5,218,443 = 5,218,443 : x
2. Step 2: Convert to fraction form
   3,805,558/5,218,443 = 5,218,443/x
3. Step 3: Cross multiply
   3,805,558x = 5,218,443 × 5,218,443
4. Step 4: Simplify right side
   3,805,558x = 27,232,147,344,249
5. Step 5: Solve for x
   x = 27,232,147,344,249/3,805,558
6. Step 6: Final answer
   x = 7,155,888.14