Finding the Third Proportional to 187,143 and 287,656.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,143 : 287,656.50 = 287,656.50 : x
2. Step 2: Convert to fraction form
   187,143/287,656.50 = 287,656.50/x
3. Step 3: Cross multiply
   187,143x = 287,656.50 × 287,656.50
4. Step 4: Simplify right side
   187,143x = 82,746,261,992.25
5. Step 5: Solve for x
   x = 82,746,261,992.25/187,143
6. Step 6: Final answer
   x = 442,155.26