Finding the Third Proportional to 128,164.50 and 275,301

Step by Step Solution

1. Step 1: Write the proportion equation
   128,164.50 : 275,301 = 275,301 : x
2. Step 2: Convert to fraction form
   128,164.50/275,301 = 275,301/x
3. Step 3: Cross multiply
   128,164.50x = 275,301 × 275,301
4. Step 4: Simplify right side
   128,164.50x = 75,790,640,601
5. Step 5: Solve for x
   x = 75,790,640,601/128,164.50
6. Step 6: Final answer
   x = 591,354.40