Finding the Third Proportional to 20,665.50 and 45,288.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,665.50 : 45,288.75 = 45,288.75 : x
2. Step 2: Convert to fraction form
   20,665.50/45,288.75 = 45,288.75/x
3. Step 3: Cross multiply
   20,665.50x = 45,288.75 × 45,288.75
4. Step 4: Simplify right side
   20,665.50x = 2,051,070,876.56
5. Step 5: Solve for x
   x = 2,051,070,876.56/20,665.50
6. Step 6: Final answer
   x = 99,250.97