Finding the Third Proportional to 132,806 and 287,736

Step by Step Solution

1. Step 1: Write the proportion equation
   132,806 : 287,736 = 287,736 : x
2. Step 2: Convert to fraction form
   132,806/287,736 = 287,736/x
3. Step 3: Cross multiply
   132,806x = 287,736 × 287,736
4. Step 4: Simplify right side
   132,806x = 82,792,005,696
5. Step 5: Solve for x
   x = 82,792,005,696/132,806
6. Step 6: Final answer
   x = 623,405.61