Finding the Third Proportional to 4,142,934 and 8,861,508

Step by Step Solution

1. Step 1: Write the proportion equation
   4,142,934 : 8,861,508 = 8,861,508 : x
2. Step 2: Convert to fraction form
   4,142,934/8,861,508 = 8,861,508/x
3. Step 3: Cross multiply
   4,142,934x = 8,861,508 × 8,861,508
4. Step 4: Simplify right side
   4,142,934x = 78,526,324,034,064
5. Step 5: Solve for x
   x = 78,526,324,034,064/4,142,934
6. Step 6: Final answer
   x = 18,954,278.30