Finding the Third Proportional to 870,658 and 1,276,179

Step by Step Solution

1. Step 1: Write the proportion equation
   870,658 : 1,276,179 = 1,276,179 : x
2. Step 2: Convert to fraction form
   870,658/1,276,179 = 1,276,179/x
3. Step 3: Cross multiply
   870,658x = 1,276,179 × 1,276,179
4. Step 4: Simplify right side
   870,658x = 1,628,632,840,041
5. Step 5: Solve for x
   x = 1,628,632,840,041/870,658
6. Step 6: Final answer
   x = 1,870,577.01