Finding the Third Proportional to 128,076.75 and 275,527.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,076.75 : 275,527.50 = 275,527.50 : x
2. Step 2: Convert to fraction form
   128,076.75/275,527.50 = 275,527.50/x
3. Step 3: Cross multiply
   128,076.75x = 275,527.50 × 275,527.50
4. Step 4: Simplify right side
   128,076.75x = 75,915,403,256.25
5. Step 5: Solve for x
   x = 75,915,403,256.25/128,076.75
6. Step 6: Final answer
   x = 592,733.68