Finding the Third Proportional to 187,161 and 287,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,161 : 287,971.50 = 287,971.50 : x
2. Step 2: Convert to fraction form
   187,161/287,971.50 = 287,971.50/x
3. Step 3: Cross multiply
   187,161x = 287,971.50 × 287,971.50
4. Step 4: Simplify right side
   187,161x = 82,927,584,812.25
5. Step 5: Solve for x
   x = 82,927,584,812.25/187,161
6. Step 6: Final answer
   x = 443,081.54