Finding the Third Proportional to 1,421,340 and 3,108,399

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,340 : 3,108,399 = 3,108,399 : x
2. Step 2: Convert to fraction form
   1,421,340/3,108,399 = 3,108,399/x
3. Step 3: Cross multiply
   1,421,340x = 3,108,399 × 3,108,399
4. Step 4: Simplify right side
   1,421,340x = 9,662,144,343,201
5. Step 5: Solve for x
   x = 9,662,144,343,201/1,421,340
6. Step 6: Final answer
   x = 6,797,912.07