Finding the Third Proportional to 3,947,208 and 8,503,488

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947,208 : 8,503,488 = 8,503,488 : x
2. Step 2: Convert to fraction form
   3,947,208/8,503,488 = 8,503,488/x
3. Step 3: Cross multiply
   3,947,208x = 8,503,488 × 8,503,488
4. Step 4: Simplify right side
   3,947,208x = 72,309,308,166,144
5. Step 5: Solve for x
   x = 72,309,308,166,144/3,947,208
6. Step 6: Final answer
   x = 18,319,102.56