Finding the Third Proportional to 87,990 and 141,670

Step by Step Solution

1. Step 1: Write the proportion equation
   87,990 : 141,670 = 141,670 : x
2. Step 2: Convert to fraction form
   87,990/141,670 = 141,670/x
3. Step 3: Cross multiply
   87,990x = 141,670 × 141,670
4. Step 4: Simplify right side
   87,990x = 20,070,388,900
5. Step 5: Solve for x
   x = 20,070,388,900/87,990
6. Step 6: Final answer
   x = 228,098.52