Finding the Third Proportional to 8,485,994 and 18,892,728

Step by Step Solution

1. Step 1: Write the proportion equation
   8,485,994 : 18,892,728 = 18,892,728 : x
2. Step 2: Convert to fraction form
   8,485,994/18,892,728 = 18,892,728/x
3. Step 3: Cross multiply
   8,485,994x = 18,892,728 × 18,892,728
4. Step 4: Simplify right side
   8,485,994x = 356,935,171,281,984
5. Step 5: Solve for x
   x = 356,935,171,281,984/8,485,994
6. Step 6: Final answer
   x = 42,061,680.85