Finding the Third Proportional to 191,776.75 and 287,665

Step by Step Solution

1. Step 1: Write the proportion equation
   191,776.75 : 287,665 = 287,665 : x
2. Step 2: Convert to fraction form
   191,776.75/287,665 = 287,665/x
3. Step 3: Cross multiply
   191,776.75x = 287,665 × 287,665
4. Step 4: Simplify right side
   191,776.75x = 82,751,152,225
5. Step 5: Solve for x
   x = 82,751,152,225/191,776.75
6. Step 6: Final answer
   x = 431,497.31