Finding the Third Proportional to 1,939,660 and 4,215,064

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,660 : 4,215,064 = 4,215,064 : x
2. Step 2: Convert to fraction form
   1,939,660/4,215,064 = 4,215,064/x
3. Step 3: Cross multiply
   1,939,660x = 4,215,064 × 4,215,064
4. Step 4: Simplify right side
   1,939,660x = 17,766,764,524,096
5. Step 5: Solve for x
   x = 17,766,764,524,096/1,939,660
6. Step 6: Final answer
   x = 9,159,731.36