Finding the Third Proportional to 131,501 and 287,606

Step by Step Solution

1. Step 1: Write the proportion equation
   131,501 : 287,606 = 287,606 : x
2. Step 2: Convert to fraction form
   131,501/287,606 = 287,606/x
3. Step 3: Cross multiply
   131,501x = 287,606 × 287,606
4. Step 4: Simplify right side
   131,501x = 82,717,211,236
5. Step 5: Solve for x
   x = 82,717,211,236/131,501
6. Step 6: Final answer
   x = 629,023.44