Finding the Third Proportional to 72,806 and 153,388

Step by Step Solution

1. Step 1: Write the proportion equation
   72,806 : 153,388 = 153,388 : x
2. Step 2: Convert to fraction form
   72,806/153,388 = 153,388/x
3. Step 3: Cross multiply
   72,806x = 153,388 × 153,388
4. Step 4: Simplify right side
   72,806x = 23,527,878,544
5. Step 5: Solve for x
   x = 23,527,878,544/72,806
6. Step 6: Final answer
   x = 323,158.51