Finding the Third Proportional to 238,389 and 360,012

Step by Step Solution

1. Step 1: Write the proportion equation
   238,389 : 360,012 = 360,012 : x
2. Step 2: Convert to fraction form
   238,389/360,012 = 360,012/x
3. Step 3: Cross multiply
   238,389x = 360,012 × 360,012
4. Step 4: Simplify right side
   238,389x = 129,608,640,144
5. Step 5: Solve for x
   x = 129,608,640,144/238,389
6. Step 6: Final answer
   x = 543,685.49