Finding the Third Proportional to 3,953,811 and 8,632,613

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953,811 : 8,632,613 = 8,632,613 : x
2. Step 2: Convert to fraction form
   3,953,811/8,632,613 = 8,632,613/x
3. Step 3: Cross multiply
   3,953,811x = 8,632,613 × 8,632,613
4. Step 4: Simplify right side
   3,953,811x = 74,522,007,207,769
5. Step 5: Solve for x
   x = 74,522,007,207,769/3,953,811
6. Step 6: Final answer
   x = 18,848,146.06