Finding the Third Proportional to 20,931.75 and 45,528.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,931.75 : 45,528.75 = 45,528.75 : x
2. Step 2: Convert to fraction form
   20,931.75/45,528.75 = 45,528.75/x
3. Step 3: Cross multiply
   20,931.75x = 45,528.75 × 45,528.75
4. Step 4: Simplify right side
   20,931.75x = 2,072,867,076.56
5. Step 5: Solve for x
   x = 2,072,867,076.56/20,931.75
6. Step 6: Final answer
   x = 99,029.80