Finding the Third Proportional to 55,809 and 131,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,809 : 131,719.50 = 131,719.50 : x
2. Step 2: Convert to fraction form
   55,809/131,719.50 = 131,719.50/x
3. Step 3: Cross multiply
   55,809x = 131,719.50 × 131,719.50
4. Step 4: Simplify right side
   55,809x = 17,350,026,680.25
5. Step 5: Solve for x
   x = 17,350,026,680.25/55,809
6. Step 6: Final answer
   x = 310,882.24