Finding the Third Proportional to 67,091 and 143,578

Step by Step Solution

1. Step 1: Write the proportion equation
   67,091 : 143,578 = 143,578 : x
2. Step 2: Convert to fraction form
   67,091/143,578 = 143,578/x
3. Step 3: Cross multiply
   67,091x = 143,578 × 143,578
4. Step 4: Simplify right side
   67,091x = 20,614,642,084
5. Step 5: Solve for x
   x = 20,614,642,084/67,091
6. Step 6: Final answer
   x = 307,263.90