Finding the Third Proportional to 1,942,401 and 4,229,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942,401 : 4,229,640 = 4,229,640 : x
2. Step 2: Convert to fraction form
   1,942,401/4,229,640 = 4,229,640/x
3. Step 3: Cross multiply
   1,942,401x = 4,229,640 × 4,229,640
4. Step 4: Simplify right side
   1,942,401x = 17,889,854,529,600
5. Step 5: Solve for x
   x = 17,889,854,529,600/1,942,401
6. Step 6: Final answer
   x = 9,210,175.72