Finding the Third Proportional to 70,178 and 150,290

Step by Step Solution

1. Step 1: Write the proportion equation
   70,178 : 150,290 = 150,290 : x
2. Step 2: Convert to fraction form
   70,178/150,290 = 150,290/x
3. Step 3: Cross multiply
   70,178x = 150,290 × 150,290
4. Step 4: Simplify right side
   70,178x = 22,587,084,100
5. Step 5: Solve for x
   x = 22,587,084,100/70,178
6. Step 6: Final answer
   x = 321,854.20