Finding the Third Proportional to 19,608.75 and 31,478.63

Step by Step Solution

1. Step 1: Write the proportion equation
   19,608.75 : 31,478.63 = 31,478.63 : x
2. Step 2: Convert to fraction form
   19,608.75/31,478.63 = 31,478.63/x
3. Step 3: Cross multiply
   19,608.75x = 31,478.63 × 31,478.63
4. Step 4: Simplify right side
   19,608.75x = 990,903,831.89
5. Step 5: Solve for x
   x = 990,903,831.89/19,608.75
6. Step 6: Final answer
   x = 50,533.76