Finding the Third Proportional to 67,866 and 147,779

Step by Step Solution

1. Step 1: Write the proportion equation
   67,866 : 147,779 = 147,779 : x
2. Step 2: Convert to fraction form
   67,866/147,779 = 147,779/x
3. Step 3: Cross multiply
   67,866x = 147,779 × 147,779
4. Step 4: Simplify right side
   67,866x = 21,838,632,841
5. Step 5: Solve for x
   x = 21,838,632,841/67,866
6. Step 6: Final answer
   x = 321,790.48