Finding the Third Proportional to 3,805,544 and 5,218,428

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805,544 : 5,218,428 = 5,218,428 : x
2. Step 2: Convert to fraction form
   3,805,544/5,218,428 = 5,218,428/x
3. Step 3: Cross multiply
   3,805,544x = 5,218,428 × 5,218,428
4. Step 4: Simplify right side
   3,805,544x = 27,231,990,791,184
5. Step 5: Solve for x
   x = 27,231,990,791,184/3,805,544
6. Step 6: Final answer
   x = 7,155,873.32