Finding the Third Proportional to 9,982,838 and 21,478,834

Step by Step Solution

1. Step 1: Write the proportion equation
   9,982,838 : 21,478,834 = 21,478,834 : x
2. Step 2: Convert to fraction form
   9,982,838/21,478,834 = 21,478,834/x
3. Step 3: Cross multiply
   9,982,838x = 21,478,834 × 21,478,834
4. Step 4: Simplify right side
   9,982,838x = 461,340,309,999,556
5. Step 5: Solve for x
   x = 461,340,309,999,556/9,982,838
6. Step 6: Final answer
   x = 46,213,342.34