Finding the Third Proportional to 72,478.41 and 146,904.28

Step by Step Solution

1. Step 1: Write the proportion equation
   72,478.41 : 146,904.28 = 146,904.28 : x
2. Step 2: Convert to fraction form
   72,478.41/146,904.28 = 146,904.28/x
3. Step 3: Cross multiply
   72,478.41x = 146,904.28 × 146,904.28
4. Step 4: Simplify right side
   72,478.41x = 21,580,867,849.58
5. Step 5: Solve for x
   x = 21,580,867,849.58/72,478.41
6. Step 6: Final answer
   x = 297,755.83