Finding the Third Proportional to 58,170 and 89,469

Step by Step Solution

1. Step 1: Write the proportion equation
   58,170 : 89,469 = 89,469 : x
2. Step 2: Convert to fraction form
   58,170/89,469 = 89,469/x
3. Step 3: Cross multiply
   58,170x = 89,469 × 89,469
4. Step 4: Simplify right side
   58,170x = 8,004,701,961
5. Step 5: Solve for x
   x = 8,004,701,961/58,170
6. Step 6: Final answer
   x = 137,608.77