Finding the Third Proportional to 9,864,089 and 21,613,858

Step by Step Solution

1. Step 1: Write the proportion equation
   9,864,089 : 21,613,858 = 21,613,858 : x
2. Step 2: Convert to fraction form
   9,864,089/21,613,858 = 21,613,858/x
3. Step 3: Cross multiply
   9,864,089x = 21,613,858 × 21,613,858
4. Step 4: Simplify right side
   9,864,089x = 467,158,857,644,164
5. Step 5: Solve for x
   x = 467,158,857,644,164/9,864,089
6. Step 6: Final answer
   x = 47,359,554.20