Finding the Third Proportional to 64,530 and 141,480

Step by Step Solution

1. Step 1: Write the proportion equation
   64,530 : 141,480 = 141,480 : x
2. Step 2: Convert to fraction form
   64,530/141,480 = 141,480/x
3. Step 3: Cross multiply
   64,530x = 141,480 × 141,480
4. Step 4: Simplify right side
   64,530x = 20,016,590,400
5. Step 5: Solve for x
   x = 20,016,590,400/64,530
6. Step 6: Final answer
   x = 310,190.46