Finding the Third Proportional to 9,039.50 and 21,118.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,039.50 : 21,118.75 = 21,118.75 : x
2. Step 2: Convert to fraction form
   9,039.50/21,118.75 = 21,118.75/x
3. Step 3: Cross multiply
   9,039.50x = 21,118.75 × 21,118.75
4. Step 4: Simplify right side
   9,039.50x = 446,001,601.56
5. Step 5: Solve for x
   x = 446,001,601.56/9,039.50
6. Step 6: Final answer
   x = 49,339.19