Finding the Third Proportional to 1,978,911 and 4,237,662

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978,911 : 4,237,662 = 4,237,662 : x
2. Step 2: Convert to fraction form
   1,978,911/4,237,662 = 4,237,662/x
3. Step 3: Cross multiply
   1,978,911x = 4,237,662 × 4,237,662
4. Step 4: Simplify right side
   1,978,911x = 17,957,779,226,244
5. Step 5: Solve for x
   x = 17,957,779,226,244/1,978,911
6. Step 6: Final answer
   x = 9,074,576.48