Finding the Third Proportional to 870,048 and 1,276,320

Step by Step Solution

1. Step 1: Write the proportion equation
   870,048 : 1,276,320 = 1,276,320 : x
2. Step 2: Convert to fraction form
   870,048/1,276,320 = 1,276,320/x
3. Step 3: Cross multiply
   870,048x = 1,276,320 × 1,276,320
4. Step 4: Simplify right side
   870,048x = 1,628,992,742,400
5. Step 5: Solve for x
   x = 1,628,992,742,400/870,048
6. Step 6: Final answer
   x = 1,872,302.15