Finding the Third Proportional to 42,585.50 and 89,585

Step by Step Solution

1. Step 1: Write the proportion equation
   42,585.50 : 89,585 = 89,585 : x
2. Step 2: Convert to fraction form
   42,585.50/89,585 = 89,585/x
3. Step 3: Cross multiply
   42,585.50x = 89,585 × 89,585
4. Step 4: Simplify right side
   42,585.50x = 8,025,472,225
5. Step 5: Solve for x
   x = 8,025,472,225/42,585.50
6. Step 6: Final answer
   x = 188,455.51