Finding the Third Proportional to 109,357.50 and 238,479

Step by Step Solution

1. Step 1: Write the proportion equation
   109,357.50 : 238,479 = 238,479 : x
2. Step 2: Convert to fraction form
   109,357.50/238,479 = 238,479/x
3. Step 3: Cross multiply
   109,357.50x = 238,479 × 238,479
4. Step 4: Simplify right side
   109,357.50x = 56,872,233,441
5. Step 5: Solve for x
   x = 56,872,233,441/109,357.50
6. Step 6: Final answer
   x = 520,057.92