Finding the Third Proportional to 89,700 and 140,724

Step by Step Solution

1. Step 1: Write the proportion equation
   89,700 : 140,724 = 140,724 : x
2. Step 2: Convert to fraction form
   89,700/140,724 = 140,724/x
3. Step 3: Cross multiply
   89,700x = 140,724 × 140,724
4. Step 4: Simplify right side
   89,700x = 19,803,244,176
5. Step 5: Solve for x
   x = 19,803,244,176/89,700
6. Step 6: Final answer
   x = 220,771.95