Finding the Third Proportional to 72,480.75 and 108,383.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,480.75 : 108,383.25 = 108,383.25 : x
2. Step 2: Convert to fraction form
   72,480.75/108,383.25 = 108,383.25/x
3. Step 3: Cross multiply
   72,480.75x = 108,383.25 × 108,383.25
4. Step 4: Simplify right side
   72,480.75x = 11,746,928,880.56
5. Step 5: Solve for x
   x = 11,746,928,880.56/72,480.75
6. Step 6: Final answer
   x = 162,069.64