Finding the Third Proportional to 1,621,470 and 3,554,268

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,470 : 3,554,268 = 3,554,268 : x
2. Step 2: Convert to fraction form
   1,621,470/3,554,268 = 3,554,268/x
3. Step 3: Cross multiply
   1,621,470x = 3,554,268 × 3,554,268
4. Step 4: Simplify right side
   1,621,470x = 12,632,821,015,824
5. Step 5: Solve for x
   x = 12,632,821,015,824/1,621,470
6. Step 6: Final answer
   x = 7,790,968.08