Finding the Third Proportional to 4,166,008 and 8,663,720

Step by Step Solution

1. Step 1: Write the proportion equation
   4,166,008 : 8,663,720 = 8,663,720 : x
2. Step 2: Convert to fraction form
   4,166,008/8,663,720 = 8,663,720/x
3. Step 3: Cross multiply
   4,166,008x = 8,663,720 × 8,663,720
4. Step 4: Simplify right side
   4,166,008x = 75,060,044,238,400
5. Step 5: Solve for x
   x = 75,060,044,238,400/4,166,008
6. Step 6: Final answer
   x = 18,017,258.79