Finding the Third Proportional to 1,863,186 and 3,991,968

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863,186 : 3,991,968 = 3,991,968 : x
2. Step 2: Convert to fraction form
   1,863,186/3,991,968 = 3,991,968/x
3. Step 3: Cross multiply
   1,863,186x = 3,991,968 × 3,991,968
4. Step 4: Simplify right side
   1,863,186x = 15,935,808,513,024
5. Step 5: Solve for x
   x = 15,935,808,513,024/1,863,186
6. Step 6: Final answer
   x = 8,552,988.54