Finding the Third Proportional to 1,309,869 and 1,969,668

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,869 : 1,969,668 = 1,969,668 : x
2. Step 2: Convert to fraction form
   1,309,869/1,969,668 = 1,969,668/x
3. Step 3: Cross multiply
   1,309,869x = 1,969,668 × 1,969,668
4. Step 4: Simplify right side
   1,309,869x = 3,879,592,030,224
5. Step 5: Solve for x
   x = 3,879,592,030,224/1,309,869
6. Step 6: Final answer
   x = 2,961,816.82