Finding the Third Proportional to 90,769.50 and 109,908

Step by Step Solution

1. Step 1: Write the proportion equation
   90,769.50 : 109,908 = 109,908 : x
2. Step 2: Convert to fraction form
   90,769.50/109,908 = 109,908/x
3. Step 3: Cross multiply
   90,769.50x = 109,908 × 109,908
4. Step 4: Simplify right side
   90,769.50x = 12,079,768,464
5. Step 5: Solve for x
   x = 12,079,768,464/90,769.50
6. Step 6: Final answer
   x = 133,081.80