Finding the Third Proportional to 3,953,830 and 8,632,644

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953,830 : 8,632,644 = 8,632,644 : x
2. Step 2: Convert to fraction form
   3,953,830/8,632,644 = 8,632,644/x
3. Step 3: Cross multiply
   3,953,830x = 8,632,644 × 8,632,644
4. Step 4: Simplify right side
   3,953,830x = 74,522,542,430,736
5. Step 5: Solve for x
   x = 74,522,542,430,736/3,953,830
6. Step 6: Final answer
   x = 18,848,190.85