Finding the Third Proportional to 67,738 and 144,890

Step by Step Solution

1. Step 1: Write the proportion equation
   67,738 : 144,890 = 144,890 : x
2. Step 2: Convert to fraction form
   67,738/144,890 = 144,890/x
3. Step 3: Cross multiply
   67,738x = 144,890 × 144,890
4. Step 4: Simplify right side
   67,738x = 20,993,112,100
5. Step 5: Solve for x
   x = 20,993,112,100/67,738
6. Step 6: Final answer
   x = 309,916.33