Finding the Third Proportional to 8,485,947 and 18,892,628

Step by Step Solution

1. Step 1: Write the proportion equation
   8,485,947 : 18,892,628 = 18,892,628 : x
2. Step 2: Convert to fraction form
   8,485,947/18,892,628 = 18,892,628/x
3. Step 3: Cross multiply
   8,485,947x = 18,892,628 × 18,892,628
4. Step 4: Simplify right side
   8,485,947x = 356,931,392,746,384
5. Step 5: Solve for x
   x = 356,931,392,746,384/8,485,947
6. Step 6: Final answer
   x = 42,061,468.54