Finding the Third Proportional to 55,647.50 and 131,231

Step by Step Solution

1. Step 1: Write the proportion equation
   55,647.50 : 131,231 = 131,231 : x
2. Step 2: Convert to fraction form
   55,647.50/131,231 = 131,231/x
3. Step 3: Cross multiply
   55,647.50x = 131,231 × 131,231
4. Step 4: Simplify right side
   55,647.50x = 17,221,575,361
5. Step 5: Solve for x
   x = 17,221,575,361/55,647.50
6. Step 6: Final answer
   x = 309,476.17