Finding the Third Proportional to 132,811 and 287,746

Step by Step Solution

1. Step 1: Write the proportion equation
   132,811 : 287,746 = 287,746 : x
2. Step 2: Convert to fraction form
   132,811/287,746 = 287,746/x
3. Step 3: Cross multiply
   132,811x = 287,746 × 287,746
4. Step 4: Simplify right side
   132,811x = 82,797,760,516
5. Step 5: Solve for x
   x = 82,797,760,516/132,811
6. Step 6: Final answer
   x = 623,425.47