Finding the Third Proportional to 108,978 and 168,813

Step by Step Solution

1. Step 1: Write the proportion equation
   108,978 : 168,813 = 168,813 : x
2. Step 2: Convert to fraction form
   108,978/168,813 = 168,813/x
3. Step 3: Cross multiply
   108,978x = 168,813 × 168,813
4. Step 4: Simplify right side
   108,978x = 28,497,828,969
5. Step 5: Solve for x
   x = 28,497,828,969/108,978
6. Step 6: Final answer
   x = 261,500.75