Finding the Third Proportional to 4,245,578 and 8,970,356

Step by Step Solution

1. Step 1: Write the proportion equation
   4,245,578 : 8,970,356 = 8,970,356 : x
2. Step 2: Convert to fraction form
   4,245,578/8,970,356 = 8,970,356/x
3. Step 3: Cross multiply
   4,245,578x = 8,970,356 × 8,970,356
4. Step 4: Simplify right side
   4,245,578x = 80,467,286,766,736
5. Step 5: Solve for x
   x = 80,467,286,766,736/4,245,578
6. Step 6: Final answer
   x = 18,953,199.49