Finding the Third Proportional to 19,931 and 30,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,931 : 30,661.50 = 30,661.50 : x
2. Step 2: Convert to fraction form
   19,931/30,661.50 = 30,661.50/x
3. Step 3: Cross multiply
   19,931x = 30,661.50 × 30,661.50
4. Step 4: Simplify right side
   19,931x = 940,127,582.25
5. Step 5: Solve for x
   x = 940,127,582.25/19,931
6. Step 6: Final answer
   x = 47,169.11