Finding the Third Proportional to 870,646 and 1,182,315

Step by Step Solution

1. Step 1: Write the proportion equation
   870,646 : 1,182,315 = 1,182,315 : x
2. Step 2: Convert to fraction form
   870,646/1,182,315 = 1,182,315/x
3. Step 3: Cross multiply
   870,646x = 1,182,315 × 1,182,315
4. Step 4: Simplify right side
   870,646x = 1,397,868,759,225
5. Step 5: Solve for x
   x = 1,397,868,759,225/870,646
6. Step 6: Final answer
   x = 1,605,553.53