Finding the Third Proportional to 870,986 and 1,368,699

Step by Step Solution

1. Step 1: Write the proportion equation
   870,986 : 1,368,699 = 1,368,699 : x
2. Step 2: Convert to fraction form
   870,986/1,368,699 = 1,368,699/x
3. Step 3: Cross multiply
   870,986x = 1,368,699 × 1,368,699
4. Step 4: Simplify right side
   870,986x = 1,873,336,952,601
5. Step 5: Solve for x
   x = 1,873,336,952,601/870,986
6. Step 6: Final answer
   x = 2,150,823.27