Finding the Third Proportional to 3,662,778 and 5,388,243

Step by Step Solution

1. Step 1: Write the proportion equation
   3,662,778 : 5,388,243 = 5,388,243 : x
2. Step 2: Convert to fraction form
   3,662,778/5,388,243 = 5,388,243/x
3. Step 3: Cross multiply
   3,662,778x = 5,388,243 × 5,388,243
4. Step 4: Simplify right side
   3,662,778x = 29,033,162,627,049
5. Step 5: Solve for x
   x = 29,033,162,627,049/3,662,778
6. Step 6: Final answer
   x = 7,926,541.72