Finding the Third Proportional to 679,543 and 816,096

Step by Step Solution

1. Step 1: Write the proportion equation
   679,543 : 816,096 = 816,096 : x
2. Step 2: Convert to fraction form
   679,543/816,096 = 816,096/x
3. Step 3: Cross multiply
   679,543x = 816,096 × 816,096
4. Step 4: Simplify right side
   679,543x = 666,012,681,216
5. Step 5: Solve for x
   x = 666,012,681,216/679,543
6. Step 6: Final answer
   x = 980,089.09