Finding the Third Proportional to 43,242 and 89,724

Step by Step Solution

1. Step 1: Write the proportion equation
   43,242 : 89,724 = 89,724 : x
2. Step 2: Convert to fraction form
   43,242/89,724 = 89,724/x
3. Step 3: Cross multiply
   43,242x = 89,724 × 89,724
4. Step 4: Simplify right side
   43,242x = 8,050,396,176
5. Step 5: Solve for x
   x = 8,050,396,176/43,242
6. Step 6: Final answer
   x = 186,170.76