Finding the Third Proportional to 3,947,769 and 8,482,749

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947,769 : 8,482,749 = 8,482,749 : x
2. Step 2: Convert to fraction form
   3,947,769/8,482,749 = 8,482,749/x
3. Step 3: Cross multiply
   3,947,769x = 8,482,749 × 8,482,749
4. Step 4: Simplify right side
   3,947,769x = 71,957,030,597,001
5. Step 5: Solve for x
   x = 71,957,030,597,001/3,947,769
6. Step 6: Final answer
   x = 18,227,264.72