Finding the Third Proportional to 131,640 and 284,255.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,640 : 284,255.25 = 284,255.25 : x
2. Step 2: Convert to fraction form
   131,640/284,255.25 = 284,255.25/x
3. Step 3: Cross multiply
   131,640x = 284,255.25 × 284,255.25
4. Step 4: Simplify right side
   131,640x = 80,801,047,152.56
5. Step 5: Solve for x
   x = 80,801,047,152.56/131,640
6. Step 6: Final answer
   x = 613,803.15