Finding the Third Proportional to 111,706.50 and 240,909

Step by Step Solution

1. Step 1: Write the proportion equation
   111,706.50 : 240,909 = 240,909 : x
2. Step 2: Convert to fraction form
   111,706.50/240,909 = 240,909/x
3. Step 3: Cross multiply
   111,706.50x = 240,909 × 240,909
4. Step 4: Simplify right side
   111,706.50x = 58,037,146,281
5. Step 5: Solve for x
   x = 58,037,146,281/111,706.50
6. Step 6: Final answer
   x = 519,550.31