Finding the Third Proportional to 86,775.75 and 131,088

Step by Step Solution

1. Step 1: Write the proportion equation
   86,775.75 : 131,088 = 131,088 : x
2. Step 2: Convert to fraction form
   86,775.75/131,088 = 131,088/x
3. Step 3: Cross multiply
   86,775.75x = 131,088 × 131,088
4. Step 4: Simplify right side
   86,775.75x = 17,184,063,744
5. Step 5: Solve for x
   x = 17,184,063,744/86,775.75
6. Step 6: Final answer
   x = 198,028.41