Finding the Third Proportional to 3,947,761 and 8,482,729

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947,761 : 8,482,729 = 8,482,729 : x
2. Step 2: Convert to fraction form
   3,947,761/8,482,729 = 8,482,729/x
3. Step 3: Cross multiply
   3,947,761x = 8,482,729 × 8,482,729
4. Step 4: Simplify right side
   3,947,761x = 71,956,691,287,441
5. Step 5: Solve for x
   x = 71,956,691,287,441/3,947,761
6. Step 6: Final answer
   x = 18,227,215.70