Finding the Third Proportional to 72,900 and 110,328.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,900 : 110,328.75 = 110,328.75 : x
2. Step 2: Convert to fraction form
   72,900/110,328.75 = 110,328.75/x
3. Step 3: Cross multiply
   72,900x = 110,328.75 × 110,328.75
4. Step 4: Simplify right side
   72,900x = 12,172,433,076.56
5. Step 5: Solve for x
   x = 12,172,433,076.56/72,900
6. Step 6: Final answer
   x = 166,974.39