Finding the Third Proportional to 138,017.25 and 281,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,017.25 : 281,839.50 = 281,839.50 : x
2. Step 2: Convert to fraction form
   138,017.25/281,839.50 = 281,839.50/x
3. Step 3: Cross multiply
   138,017.25x = 281,839.50 × 281,839.50
4. Step 4: Simplify right side
   138,017.25x = 79,433,503,760.25
5. Step 5: Solve for x
   x = 79,433,503,760.25/138,017.25
6. Step 6: Final answer
   x = 575,533.16