Finding the Third Proportional to 3,521,397 and 7,717,848

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521,397 : 7,717,848 = 7,717,848 : x
2. Step 2: Convert to fraction form
   3,521,397/7,717,848 = 7,717,848/x
3. Step 3: Cross multiply
   3,521,397x = 7,717,848 × 7,717,848
4. Step 4: Simplify right side
   3,521,397x = 59,565,177,751,104
5. Step 5: Solve for x
   x = 59,565,177,751,104/3,521,397
6. Step 6: Final answer
   x = 16,915,212.27