Finding the Third Proportional to 70,578 and 151,390

Step by Step Solution

1. Step 1: Write the proportion equation
   70,578 : 151,390 = 151,390 : x
2. Step 2: Convert to fraction form
   70,578/151,390 = 151,390/x
3. Step 3: Cross multiply
   70,578x = 151,390 × 151,390
4. Step 4: Simplify right side
   70,578x = 22,918,932,100
5. Step 5: Solve for x
   x = 22,918,932,100/70,578
6. Step 6: Final answer
   x = 324,731.96