Finding the Third Proportional to 286,041.50 and 388,479

Step by Step Solution

1. Step 1: Write the proportion equation
   286,041.50 : 388,479 = 388,479 : x
2. Step 2: Convert to fraction form
   286,041.50/388,479 = 388,479/x
3. Step 3: Cross multiply
   286,041.50x = 388,479 × 388,479
4. Step 4: Simplify right side
   286,041.50x = 150,915,933,441
5. Step 5: Solve for x
   x = 150,915,933,441/286,041.50
6. Step 6: Final answer
   x = 527,601.53