Finding the Third Proportional to 67,218 and 147,540

Step by Step Solution

1. Step 1: Write the proportion equation
   67,218 : 147,540 = 147,540 : x
2. Step 2: Convert to fraction form
   67,218/147,540 = 147,540/x
3. Step 3: Cross multiply
   67,218x = 147,540 × 147,540
4. Step 4: Simplify right side
   67,218x = 21,768,051,600
5. Step 5: Solve for x
   x = 21,768,051,600/67,218
6. Step 6: Final answer
   x = 323,842.60