Finding the Third Proportional to 1,620,279 and 3,489,858

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620,279 : 3,489,858 = 3,489,858 : x
2. Step 2: Convert to fraction form
   1,620,279/3,489,858 = 3,489,858/x
3. Step 3: Cross multiply
   1,620,279x = 3,489,858 × 3,489,858
4. Step 4: Simplify right side
   1,620,279x = 12,179,108,860,164
5. Step 5: Solve for x
   x = 12,179,108,860,164/1,620,279
6. Step 6: Final answer
   x = 7,516,673.89