Finding the Third Proportional to 1,691,286 and 3,559,638

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,286 : 3,559,638 = 3,559,638 : x
2. Step 2: Convert to fraction form
   1,691,286/3,559,638 = 3,559,638/x
3. Step 3: Cross multiply
   1,691,286x = 3,559,638 × 3,559,638
4. Step 4: Simplify right side
   1,691,286x = 12,671,022,691,044
5. Step 5: Solve for x
   x = 12,671,022,691,044/1,691,286
6. Step 6: Final answer
   x = 7,491,945.59