Finding the Third Proportional to 87,580 and 188,300

Step by Step Solution

1. Step 1: Write the proportion equation
   87,580 : 188,300 = 188,300 : x
2. Step 2: Convert to fraction form
   87,580/188,300 = 188,300/x
3. Step 3: Cross multiply
   87,580x = 188,300 × 188,300
4. Step 4: Simplify right side
   87,580x = 35,456,890,000
5. Step 5: Solve for x
   x = 35,456,890,000/87,580
6. Step 6: Final answer
   x = 404,851.45