Finding the Third Proportional to 138,852.50 and 287,551

Step by Step Solution

1. Step 1: Write the proportion equation
   138,852.50 : 287,551 = 287,551 : x
2. Step 2: Convert to fraction form
   138,852.50/287,551 = 287,551/x
3. Step 3: Cross multiply
   138,852.50x = 287,551 × 287,551
4. Step 4: Simplify right side
   138,852.50x = 82,685,577,601
5. Step 5: Solve for x
   x = 82,685,577,601/138,852.50
6. Step 6: Final answer
   x = 595,492.18