Finding the Third Proportional to 58,911 and 89,223

Step by Step Solution

1. Step 1: Write the proportion equation
   58,911 : 89,223 = 89,223 : x
2. Step 2: Convert to fraction form
   58,911/89,223 = 89,223/x
3. Step 3: Cross multiply
   58,911x = 89,223 × 89,223
4. Step 4: Simplify right side
   58,911x = 7,960,743,729
5. Step 5: Solve for x
   x = 7,960,743,729/58,911
6. Step 6: Final answer
   x = 135,131.70