Finding the Third Proportional to 1,645,281 and 3,668,643

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645,281 : 3,668,643 = 3,668,643 : x
2. Step 2: Convert to fraction form
   1,645,281/3,668,643 = 3,668,643/x
3. Step 3: Cross multiply
   1,645,281x = 3,668,643 × 3,668,643
4. Step 4: Simplify right side
   1,645,281x = 13,458,941,461,449
5. Step 5: Solve for x
   x = 13,458,941,461,449/1,645,281
6. Step 6: Final answer
   x = 8,180,329.96