Finding the Third Proportional to 6,990.50 and 10,729

Step by Step Solution

1. Step 1: Write the proportion equation
   6,990.50 : 10,729 = 10,729 : x
2. Step 2: Convert to fraction form
   6,990.50/10,729 = 10,729/x
3. Step 3: Cross multiply
   6,990.50x = 10,729 × 10,729
4. Step 4: Simplify right side
   6,990.50x = 115,111,441
5. Step 5: Solve for x
   x = 115,111,441/6,990.50
6. Step 6: Final answer
   x = 16,466.84