Finding the Third Proportional to 3,953,888 and 8,632,890

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953,888 : 8,632,890 = 8,632,890 : x
2. Step 2: Convert to fraction form
   3,953,888/8,632,890 = 8,632,890/x
3. Step 3: Cross multiply
   3,953,888x = 8,632,890 × 8,632,890
4. Step 4: Simplify right side
   3,953,888x = 74,526,789,752,100
5. Step 5: Solve for x
   x = 74,526,789,752,100/3,953,888
6. Step 6: Final answer
   x = 18,848,988.58