Finding the Third Proportional to 3,939,954 and 8,627,238

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,954 : 8,627,238 = 8,627,238 : x
2. Step 2: Convert to fraction form
   3,939,954/8,627,238 = 8,627,238/x
3. Step 3: Cross multiply
   3,939,954x = 8,627,238 × 8,627,238
4. Step 4: Simplify right side
   3,939,954x = 74,429,235,508,644
5. Step 5: Solve for x
   x = 74,429,235,508,644/3,939,954
6. Step 6: Final answer
   x = 18,890,889.46