Finding the Third Proportional to 88,689 and 190,500

Step by Step Solution

1. Step 1: Write the proportion equation
   88,689 : 190,500 = 190,500 : x
2. Step 2: Convert to fraction form
   88,689/190,500 = 190,500/x
3. Step 3: Cross multiply
   88,689x = 190,500 × 190,500
4. Step 4: Simplify right side
   88,689x = 36,290,250,000
5. Step 5: Solve for x
   x = 36,290,250,000/88,689
6. Step 6: Final answer
   x = 409,185.47