Finding the Third Proportional to 48,478.50 and 72,769.50

Step by Step Solution

1. Step 1: Write the proportion equation
   48,478.50 : 72,769.50 = 72,769.50 : x
2. Step 2: Convert to fraction form
   48,478.50/72,769.50 = 72,769.50/x
3. Step 3: Cross multiply
   48,478.50x = 72,769.50 × 72,769.50
4. Step 4: Simplify right side
   48,478.50x = 5,295,400,130.25
5. Step 5: Solve for x
   x = 5,295,400,130.25/48,478.50
6. Step 6: Final answer
   x = 109,231.93