Finding the Third Proportional to 85,597.50 and 133,578

Step by Step Solution

1. Step 1: Write the proportion equation
   85,597.50 : 133,578 = 133,578 : x
2. Step 2: Convert to fraction form
   85,597.50/133,578 = 133,578/x
3. Step 3: Cross multiply
   85,597.50x = 133,578 × 133,578
4. Step 4: Simplify right side
   85,597.50x = 17,843,082,084
5. Step 5: Solve for x
   x = 17,843,082,084/85,597.50
6. Step 6: Final answer
   x = 208,453.31