Finding the Third Proportional to 3,835,176 and 8,521,680

Step by Step Solution

1. Step 1: Write the proportion equation
   3,835,176 : 8,521,680 = 8,521,680 : x
2. Step 2: Convert to fraction form
   3,835,176/8,521,680 = 8,521,680/x
3. Step 3: Cross multiply
   3,835,176x = 8,521,680 × 8,521,680
4. Step 4: Simplify right side
   3,835,176x = 72,619,030,022,400
5. Step 5: Solve for x
   x = 72,619,030,022,400/3,835,176
6. Step 6: Final answer
   x = 18,934,992.82