Finding the Third Proportional to 870,929 and 1,866,274

Step by Step Solution

1. Step 1: Write the proportion equation
   870,929 : 1,866,274 = 1,866,274 : x
2. Step 2: Convert to fraction form
   870,929/1,866,274 = 1,866,274/x
3. Step 3: Cross multiply
   870,929x = 1,866,274 × 1,866,274
4. Step 4: Simplify right side
   870,929x = 3,482,978,643,076
5. Step 5: Solve for x
   x = 3,482,978,643,076/870,929
6. Step 6: Final answer
   x = 3,999,153.37