Finding the Third Proportional to 3,947,132 and 8,503,330

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947,132 : 8,503,330 = 8,503,330 : x
2. Step 2: Convert to fraction form
   3,947,132/8,503,330 = 8,503,330/x
3. Step 3: Cross multiply
   3,947,132x = 8,503,330 × 8,503,330
4. Step 4: Simplify right side
   3,947,132x = 72,306,621,088,900
5. Step 5: Solve for x
   x = 72,306,621,088,900/3,947,132
6. Step 6: Final answer
   x = 18,318,774.51