Finding the Third Proportional to 187,141.50 and 287,653

Step by Step Solution

1. Step 1: Write the proportion equation
   187,141.50 : 287,653 = 287,653 : x
2. Step 2: Convert to fraction form
   187,141.50/287,653 = 287,653/x
3. Step 3: Cross multiply
   187,141.50x = 287,653 × 287,653
4. Step 4: Simplify right side
   187,141.50x = 82,744,248,409
5. Step 5: Solve for x
   x = 82,744,248,409/187,141.50
6. Step 6: Final answer
   x = 442,148.05