Finding the Third Proportional to 3,805,556 and 5,218,440

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805,556 : 5,218,440 = 5,218,440 : x
2. Step 2: Convert to fraction form
   3,805,556/5,218,440 = 5,218,440/x
3. Step 3: Cross multiply
   3,805,556x = 5,218,440 × 5,218,440
4. Step 4: Simplify right side
   3,805,556x = 27,232,116,033,600
5. Step 5: Solve for x
   x = 27,232,116,033,600/3,805,556
6. Step 6: Final answer
   x = 7,155,883.67