Finding the Third Proportional to 55,643.75 and 131,222.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,643.75 : 131,222.25 = 131,222.25 : x
2. Step 2: Convert to fraction form
   55,643.75/131,222.25 = 131,222.25/x
3. Step 3: Cross multiply
   55,643.75x = 131,222.25 × 131,222.25
4. Step 4: Simplify right side
   55,643.75x = 17,219,278,895.06
5. Step 5: Solve for x
   x = 17,219,278,895.06/55,643.75
6. Step 6: Final answer
   x = 309,455.76