Finding the Third Proportional to 69,570.38 and 148,980

Step by Step Solution

1. Step 1: Write the proportion equation
   69,570.38 : 148,980 = 148,980 : x
2. Step 2: Convert to fraction form
   69,570.38/148,980 = 148,980/x
3. Step 3: Cross multiply
   69,570.38x = 148,980 × 148,980
4. Step 4: Simplify right side
   69,570.38x = 22,195,040,400
5. Step 5: Solve for x
   x = 22,195,040,400/69,570.38
6. Step 6: Final answer
   x = 319,030.05