Finding the Third Proportional to 3,939,956 and 8,627,242

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,956 : 8,627,242 = 8,627,242 : x
2. Step 2: Convert to fraction form
   3,939,956/8,627,242 = 8,627,242/x
3. Step 3: Cross multiply
   3,939,956x = 8,627,242 × 8,627,242
4. Step 4: Simplify right side
   3,939,956x = 74,429,304,526,564
5. Step 5: Solve for x
   x = 74,429,304,526,564/3,939,956
6. Step 6: Final answer
   x = 18,890,897.39