Finding the Third Proportional to 1,105,668 and 1,621,749

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,668 : 1,621,749 = 1,621,749 : x
2. Step 2: Convert to fraction form
   1,105,668/1,621,749 = 1,621,749/x
3. Step 3: Cross multiply
   1,105,668x = 1,621,749 × 1,621,749
4. Step 4: Simplify right side
   1,105,668x = 2,630,069,819,001
5. Step 5: Solve for x
   x = 2,630,069,819,001/1,105,668
6. Step 6: Final answer
   x = 2,378,715.69