Finding the Third Proportional to 131,002.75 and 280,698.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,002.75 : 280,698.50 = 280,698.50 : x
2. Step 2: Convert to fraction form
   131,002.75/280,698.50 = 280,698.50/x
3. Step 3: Cross multiply
   131,002.75x = 280,698.50 × 280,698.50
4. Step 4: Simplify right side
   131,002.75x = 78,791,647,902.25
5. Step 5: Solve for x
   x = 78,791,647,902.25/131,002.75
6. Step 6: Final answer
   x = 601,450.34