Finding the Third Proportional to 3,968,770 and 8,414,428

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,770 : 8,414,428 = 8,414,428 : x
2. Step 2: Convert to fraction form
   3,968,770/8,414,428 = 8,414,428/x
3. Step 3: Cross multiply
   3,968,770x = 8,414,428 × 8,414,428
4. Step 4: Simplify right side
   3,968,770x = 70,802,598,567,184
5. Step 5: Solve for x
   x = 70,802,598,567,184/3,968,770
6. Step 6: Final answer
   x = 17,839,934.93