Finding the Third Proportional to 12,091.50 and 28,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,091.50 : 28,831.50 = 28,831.50 : x
2. Step 2: Convert to fraction form
   12,091.50/28,831.50 = 28,831.50/x
3. Step 3: Cross multiply
   12,091.50x = 28,831.50 × 28,831.50
4. Step 4: Simplify right side
   12,091.50x = 831,255,392.25
5. Step 5: Solve for x
   x = 831,255,392.25/12,091.50
6. Step 6: Final answer
   x = 68,747.09