Finding the Third Proportional to 726,359 and 857,580

Step by Step Solution

1. Step 1: Write the proportion equation
   726,359 : 857,580 = 857,580 : x
2. Step 2: Convert to fraction form
   726,359/857,580 = 857,580/x
3. Step 3: Cross multiply
   726,359x = 857,580 × 857,580
4. Step 4: Simplify right side
   726,359x = 735,443,456,400
5. Step 5: Solve for x
   x = 735,443,456,400/726,359
6. Step 6: Final answer
   x = 1,012,506.84