Finding the Third Proportional to 1,989,630 and 4,262,919

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989,630 : 4,262,919 = 4,262,919 : x
2. Step 2: Convert to fraction form
   1,989,630/4,262,919 = 4,262,919/x
3. Step 3: Cross multiply
   1,989,630x = 4,262,919 × 4,262,919
4. Step 4: Simplify right side
   1,989,630x = 18,172,478,400,561
5. Step 5: Solve for x
   x = 18,172,478,400,561/1,989,630
6. Step 6: Final answer
   x = 9,133,596.90