Finding the Third Proportional to 3,731,914 and 8,139,120

Step by Step Solution

1. Step 1: Write the proportion equation
   3,731,914 : 8,139,120 = 8,139,120 : x
2. Step 2: Convert to fraction form
   3,731,914/8,139,120 = 8,139,120/x
3. Step 3: Cross multiply
   3,731,914x = 8,139,120 × 8,139,120
4. Step 4: Simplify right side
   3,731,914x = 66,245,274,374,400
5. Step 5: Solve for x
   x = 66,245,274,374,400/3,731,914
6. Step 6: Final answer
   x = 17,751,018.48