Finding the Third Proportional to 3,669,479 and 8,290,284

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669,479 : 8,290,284 = 8,290,284 : x
2. Step 2: Convert to fraction form
   3,669,479/8,290,284 = 8,290,284/x
3. Step 3: Cross multiply
   3,669,479x = 8,290,284 × 8,290,284
4. Step 4: Simplify right side
   3,669,479x = 68,728,808,800,656
5. Step 5: Solve for x
   x = 68,728,808,800,656/3,669,479
6. Step 6: Final answer
   x = 18,729,854.78