Finding the Third Proportional to 864,320 and 1,268,449

Step by Step Solution

1. Step 1: Write the proportion equation
   864,320 : 1,268,449 = 1,268,449 : x
2. Step 2: Convert to fraction form
   864,320/1,268,449 = 1,268,449/x
3. Step 3: Cross multiply
   864,320x = 1,268,449 × 1,268,449
4. Step 4: Simplify right side
   864,320x = 1,608,962,865,601
5. Step 5: Solve for x
   x = 1,608,962,865,601/864,320
6. Step 6: Final answer
   x = 1,861,536.08