Finding the Third Proportional to 238,639.50 and 519,885

Step by Step Solution

1. Step 1: Write the proportion equation
   238,639.50 : 519,885 = 519,885 : x
2. Step 2: Convert to fraction form
   238,639.50/519,885 = 519,885/x
3. Step 3: Cross multiply
   238,639.50x = 519,885 × 519,885
4. Step 4: Simplify right side
   238,639.50x = 270,280,413,225
5. Step 5: Solve for x
   x = 270,280,413,225/238,639.50
6. Step 6: Final answer
   x = 1,132,588.75