Finding the Third Proportional to 72,790 and 154,328

Step by Step Solution

1. Step 1: Write the proportion equation
   72,790 : 154,328 = 154,328 : x
2. Step 2: Convert to fraction form
   72,790/154,328 = 154,328/x
3. Step 3: Cross multiply
   72,790x = 154,328 × 154,328
4. Step 4: Simplify right side
   72,790x = 23,817,131,584
5. Step 5: Solve for x
   x = 23,817,131,584/72,790
6. Step 6: Final answer
   x = 327,203.35