Finding the Third Proportional to 525,798 and 858,502

Step by Step Solution

1. Step 1: Write the proportion equation
   525,798 : 858,502 = 858,502 : x
2. Step 2: Convert to fraction form
   525,798/858,502 = 858,502/x
3. Step 3: Cross multiply
   525,798x = 858,502 × 858,502
4. Step 4: Simplify right side
   525,798x = 737,025,684,004
5. Step 5: Solve for x
   x = 737,025,684,004/525,798
6. Step 6: Final answer
   x = 1,401,727.82