Finding the Third Proportional to 2,219,978 and 3,321,031

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219,978 : 3,321,031 = 3,321,031 : x
2. Step 2: Convert to fraction form
   2,219,978/3,321,031 = 3,321,031/x
3. Step 3: Cross multiply
   2,219,978x = 3,321,031 × 3,321,031
4. Step 4: Simplify right side
   2,219,978x = 11,029,246,902,961
5. Step 5: Solve for x
   x = 11,029,246,902,961/2,219,978
6. Step 6: Final answer
   x = 4,968,178.47