Finding the Third Proportional to 108,561.45 and 239,209.31

Step by Step Solution

1. Step 1: Write the proportion equation
   108,561.45 : 239,209.31 = 239,209.31 : x
2. Step 2: Convert to fraction form
   108,561.45/239,209.31 = 239,209.31/x
3. Step 3: Cross multiply
   108,561.45x = 239,209.31 × 239,209.31
4. Step 4: Simplify right side
   108,561.45x = 57,221,095,186.72
5. Step 5: Solve for x
   x = 57,221,095,186.72/108,561.45
6. Step 6: Final answer
   x = 527,084.87