Finding the Third Proportional to 20,130 and 31,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,130 : 31,921.50 = 31,921.50 : x
2. Step 2: Convert to fraction form
   20,130/31,921.50 = 31,921.50/x
3. Step 3: Cross multiply
   20,130x = 31,921.50 × 31,921.50
4. Step 4: Simplify right side
   20,130x = 1,018,982,162.25
5. Step 5: Solve for x
   x = 1,018,982,162.25/20,130
6. Step 6: Final answer
   x = 50,620.08