Finding the Third Proportional to 3,090,990 and 6,639,036

Step by Step Solution

1. Step 1: Write the proportion equation
   3,090,990 : 6,639,036 = 6,639,036 : x
2. Step 2: Convert to fraction form
   3,090,990/6,639,036 = 6,639,036/x
3. Step 3: Cross multiply
   3,090,990x = 6,639,036 × 6,639,036
4. Step 4: Simplify right side
   3,090,990x = 44,076,799,009,296
5. Step 5: Solve for x
   x = 44,076,799,009,296/3,090,990
6. Step 6: Final answer
   x = 14,259,767.59