Finding the Third Proportional to 3,920,920 and 8,493,224

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920,920 : 8,493,224 = 8,493,224 : x
2. Step 2: Convert to fraction form
   3,920,920/8,493,224 = 8,493,224/x
3. Step 3: Cross multiply
   3,920,920x = 8,493,224 × 8,493,224
4. Step 4: Simplify right side
   3,920,920x = 72,134,853,914,176
5. Step 5: Solve for x
   x = 72,134,853,914,176/3,920,920
6. Step 6: Final answer
   x = 18,397,430.68