Finding the Third Proportional to 90,769.50 and 143,172

Step by Step Solution

1. Step 1: Write the proportion equation
   90,769.50 : 143,172 = 143,172 : x
2. Step 2: Convert to fraction form
   90,769.50/143,172 = 143,172/x
3. Step 3: Cross multiply
   90,769.50x = 143,172 × 143,172
4. Step 4: Simplify right side
   90,769.50x = 20,498,221,584
5. Step 5: Solve for x
   x = 20,498,221,584/90,769.50
6. Step 6: Final answer
   x = 225,827.20