Finding the Third Proportional to 1,939,824 and 4,215,372

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,824 : 4,215,372 = 4,215,372 : x
2. Step 2: Convert to fraction form
   1,939,824/4,215,372 = 4,215,372/x
3. Step 3: Cross multiply
   1,939,824x = 4,215,372 × 4,215,372
4. Step 4: Simplify right side
   1,939,824x = 17,769,361,098,384
5. Step 5: Solve for x
   x = 17,769,361,098,384/1,939,824
6. Step 6: Final answer
   x = 9,160,295.52