Finding the Third Proportional to 69,218 and 151,540

Step by Step Solution

1. Step 1: Write the proportion equation
   69,218 : 151,540 = 151,540 : x
2. Step 2: Convert to fraction form
   69,218/151,540 = 151,540/x
3. Step 3: Cross multiply
   69,218x = 151,540 × 151,540
4. Step 4: Simplify right side
   69,218x = 22,964,371,600
5. Step 5: Solve for x
   x = 22,964,371,600/69,218
6. Step 6: Final answer
   x = 331,768.78