Finding the Third Proportional to 14,921.72 and 31,278.66

Step by Step Solution

1. Step 1: Write the proportion equation
   14,921.72 : 31,278.66 = 31,278.66 : x
2. Step 2: Convert to fraction form
   14,921.72/31,278.66 = 31,278.66/x
3. Step 3: Cross multiply
   14,921.72x = 31,278.66 × 31,278.66
4. Step 4: Simplify right side
   14,921.72x = 978,354,336.81
5. Step 5: Solve for x
   x = 978,354,336.81/14,921.72
6. Step 6: Final answer
   x = 65,565.79