Finding the Third Proportional to 131,040 and 280,777.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,040 : 280,777.50 = 280,777.50 : x
2. Step 2: Convert to fraction form
   131,040/280,777.50 = 280,777.50/x
3. Step 3: Cross multiply
   131,040x = 280,777.50 × 280,777.50
4. Step 4: Simplify right side
   131,040x = 78,836,004,506.25
5. Step 5: Solve for x
   x = 78,836,004,506.25/131,040
6. Step 6: Final answer
   x = 601,617.86