Finding the Third Proportional to 2,188,174 and 3,515,809

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,174 : 3,515,809 = 3,515,809 : x
2. Step 2: Convert to fraction form
   2,188,174/3,515,809 = 3,515,809/x
3. Step 3: Cross multiply
   2,188,174x = 3,515,809 × 3,515,809
4. Step 4: Simplify right side
   2,188,174x = 12,360,912,924,481
5. Step 5: Solve for x
   x = 12,360,912,924,481/2,188,174
6. Step 6: Final answer
   x = 5,648,962.53