Finding the Third Proportional to 4,129,944 and 8,857,758

Step by Step Solution

1. Step 1: Write the proportion equation
   4,129,944 : 8,857,758 = 8,857,758 : x
2. Step 2: Convert to fraction form
   4,129,944/8,857,758 = 8,857,758/x
3. Step 3: Cross multiply
   4,129,944x = 8,857,758 × 8,857,758
4. Step 4: Simplify right side
   4,129,944x = 78,459,876,786,564
5. Step 5: Solve for x
   x = 78,459,876,786,564/4,129,944
6. Step 6: Final answer
   x = 18,997,806.46