Finding the Third Proportional to 57,048 and 133,290

Step by Step Solution

1. Step 1: Write the proportion equation
   57,048 : 133,290 = 133,290 : x
2. Step 2: Convert to fraction form
   57,048/133,290 = 133,290/x
3. Step 3: Cross multiply
   57,048x = 133,290 × 133,290
4. Step 4: Simplify right side
   57,048x = 17,766,224,100
5. Step 5: Solve for x
   x = 17,766,224,100/57,048
6. Step 6: Final answer
   x = 311,425.89