Finding the Third Proportional to 354,870 and 535,992

Step by Step Solution

1. Step 1: Write the proportion equation
   354,870 : 535,992 = 535,992 : x
2. Step 2: Convert to fraction form
   354,870/535,992 = 535,992/x
3. Step 3: Cross multiply
   354,870x = 535,992 × 535,992
4. Step 4: Simplify right side
   354,870x = 287,287,424,064
5. Step 5: Solve for x
   x = 287,287,424,064/354,870
6. Step 6: Final answer
   x = 809,556.81