Finding the Third Proportional to 870,969 and 1,368,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   870,969 : 1,368,661.50 = 1,368,661.50 : x
2. Step 2: Convert to fraction form
   870,969/1,368,661.50 = 1,368,661.50/x
3. Step 3: Cross multiply
   870,969x = 1,368,661.50 × 1,368,661.50
4. Step 4: Simplify right side
   870,969x = 1,873,234,301,582.25
5. Step 5: Solve for x
   x = 1,873,234,301,582.25/870,969
6. Step 6: Final answer
   x = 2,150,747.39