Finding the Third Proportional to 3,731,912 and 8,139,116

Step by Step Solution

1. Step 1: Write the proportion equation
   3,731,912 : 8,139,116 = 8,139,116 : x
2. Step 2: Convert to fraction form
   3,731,912/8,139,116 = 8,139,116/x
3. Step 3: Cross multiply
   3,731,912x = 8,139,116 × 8,139,116
4. Step 4: Simplify right side
   3,731,912x = 66,245,209,261,456
5. Step 5: Solve for x
   x = 66,245,209,261,456/3,731,912
6. Step 6: Final answer
   x = 17,751,010.54