Finding the Third Proportional to 42,585.75 and 89,585.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,585.75 : 89,585.25 = 89,585.25 : x
2. Step 2: Convert to fraction form
   42,585.75/89,585.25 = 89,585.25/x
3. Step 3: Cross multiply
   42,585.75x = 89,585.25 × 89,585.25
4. Step 4: Simplify right side
   42,585.75x = 8,025,517,017.56
5. Step 5: Solve for x
   x = 8,025,517,017.56/42,585.75
6. Step 6: Final answer
   x = 188,455.46