Finding the Third Proportional to 111,012.50 and 239,783

Step by Step Solution

1. Step 1: Write the proportion equation
   111,012.50 : 239,783 = 239,783 : x
2. Step 2: Convert to fraction form
   111,012.50/239,783 = 239,783/x
3. Step 3: Cross multiply
   111,012.50x = 239,783 × 239,783
4. Step 4: Simplify right side
   111,012.50x = 57,495,887,089
5. Step 5: Solve for x
   x = 57,495,887,089/111,012.50
6. Step 6: Final answer
   x = 517,922.64