Finding the Third Proportional to 1,939,648 and 4,215,042

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,648 : 4,215,042 = 4,215,042 : x
2. Step 2: Convert to fraction form
   1,939,648/4,215,042 = 4,215,042/x
3. Step 3: Cross multiply
   1,939,648x = 4,215,042 × 4,215,042
4. Step 4: Simplify right side
   1,939,648x = 17,766,579,061,764
5. Step 5: Solve for x
   x = 17,766,579,061,764/1,939,648
6. Step 6: Final answer
   x = 9,159,692.41