Finding the Third Proportional to 3,925,918 and 8,470,488

Step by Step Solution

1. Step 1: Write the proportion equation
   3,925,918 : 8,470,488 = 8,470,488 : x
2. Step 2: Convert to fraction form
   3,925,918/8,470,488 = 8,470,488/x
3. Step 3: Cross multiply
   3,925,918x = 8,470,488 × 8,470,488
4. Step 4: Simplify right side
   3,925,918x = 71,749,166,958,144
5. Step 5: Solve for x
   x = 71,749,166,958,144/3,925,918
6. Step 6: Final answer
   x = 18,275,768.10