Finding the Third Proportional to 8,408,896 and 12,985,997

Step by Step Solution

1. Step 1: Write the proportion equation
   8,408,896 : 12,985,997 = 12,985,997 : x
2. Step 2: Convert to fraction form
   8,408,896/12,985,997 = 12,985,997/x
3. Step 3: Cross multiply
   8,408,896x = 12,985,997 × 12,985,997
4. Step 4: Simplify right side
   8,408,896x = 168,636,118,084,009
5. Step 5: Solve for x
   x = 168,636,118,084,009/8,408,896
6. Step 6: Final answer
   x = 20,054,489.68