Finding the Third Proportional to 111,688.88 and 240,870.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111,688.88 : 240,870.38 = 240,870.38 : x
2. Step 2: Convert to fraction form
   111,688.88/240,870.38 = 240,870.38/x
3. Step 3: Cross multiply
   111,688.88x = 240,870.38 × 240,870.38
4. Step 4: Simplify right side
   111,688.88x = 58,018,537,552.64
5. Step 5: Solve for x
   x = 58,018,537,552.64/111,688.88
6. Step 6: Final answer
   x = 519,465.68