Finding the Third Proportional to 1,421,500 and 3,355,668

Step by Step Solution

1. Step 1: Write the proportion equation
   1,421,500 : 3,355,668 = 3,355,668 : x
2. Step 2: Convert to fraction form
   1,421,500/3,355,668 = 3,355,668/x
3. Step 3: Cross multiply
   1,421,500x = 3,355,668 × 3,355,668
4. Step 4: Simplify right side
   1,421,500x = 11,260,507,726,224
5. Step 5: Solve for x
   x = 11,260,507,726,224/1,421,500
6. Step 6: Final answer
   x = 7,921,567.17