Finding the Third Proportional to 67,409 and 144,994

Step by Step Solution

1. Step 1: Write the proportion equation
   67,409 : 144,994 = 144,994 : x
2. Step 2: Convert to fraction form
   67,409/144,994 = 144,994/x
3. Step 3: Cross multiply
   67,409x = 144,994 × 144,994
4. Step 4: Simplify right side
   67,409x = 21,023,260,036
5. Step 5: Solve for x
   x = 21,023,260,036/67,409
6. Step 6: Final answer
   x = 311,876.16