Finding the Third Proportional to 111,130.50 and 239,634

Step by Step Solution

1. Step 1: Write the proportion equation
   111,130.50 : 239,634 = 239,634 : x
2. Step 2: Convert to fraction form
   111,130.50/239,634 = 239,634/x
3. Step 3: Cross multiply
   111,130.50x = 239,634 × 239,634
4. Step 4: Simplify right side
   111,130.50x = 57,424,453,956
5. Step 5: Solve for x
   x = 57,424,453,956/111,130.50
6. Step 6: Final answer
   x = 516,729.92