Finding the Third Proportional to 72,540 and 153,789

Step by Step Solution

1. Step 1: Write the proportion equation
   72,540 : 153,789 = 153,789 : x
2. Step 2: Convert to fraction form
   72,540/153,789 = 153,789/x
3. Step 3: Cross multiply
   72,540x = 153,789 × 153,789
4. Step 4: Simplify right side
   72,540x = 23,651,056,521
5. Step 5: Solve for x
   x = 23,651,056,521/72,540
6. Step 6: Final answer
   x = 326,041.58