Finding the Third Proportional to 57,991.50 and 123,579

Step by Step Solution

1. Step 1: Write the proportion equation
   57,991.50 : 123,579 = 123,579 : x
2. Step 2: Convert to fraction form
   57,991.50/123,579 = 123,579/x
3. Step 3: Cross multiply
   57,991.50x = 123,579 × 123,579
4. Step 4: Simplify right side
   57,991.50x = 15,271,769,241
5. Step 5: Solve for x
   x = 15,271,769,241/57,991.50
6. Step 6: Final answer
   x = 263,344.96