Finding the Third Proportional to 865,429.31 and 1,270,054.69

Step by Step Solution

1. Step 1: Write the proportion equation
   865,429.31 : 1,270,054.69 = 1,270,054.69 : x
2. Step 2: Convert to fraction form
   865,429.31/1,270,054.69 = 1,270,054.69/x
3. Step 3: Cross multiply
   865,429.31x = 1,270,054.69 × 1,270,054.69
4. Step 4: Simplify right side
   865,429.31x = 1,613,038,909,240.72
5. Step 5: Solve for x
   x = 1,613,038,909,240.72/865,429.31
6. Step 6: Final answer
   x = 1,863,859.80