Finding the Third Proportional to 38,821.50 and 91,707.75

Step by Step Solution

1. Step 1: Write the proportion equation
   38,821.50 : 91,707.75 = 91,707.75 : x
2. Step 2: Convert to fraction form
   38,821.50/91,707.75 = 91,707.75/x
3. Step 3: Cross multiply
   38,821.50x = 91,707.75 × 91,707.75
4. Step 4: Simplify right side
   38,821.50x = 8,410,311,410.06
5. Step 5: Solve for x
   x = 8,410,311,410.06/38,821.50
6. Step 6: Final answer
   x = 216,640.56