Finding the Third Proportional to 186,592.50 and 397,578

Step by Step Solution

1. Step 1: Write the proportion equation
   186,592.50 : 397,578 = 397,578 : x
2. Step 2: Convert to fraction form
   186,592.50/397,578 = 397,578/x
3. Step 3: Cross multiply
   186,592.50x = 397,578 × 397,578
4. Step 4: Simplify right side
   186,592.50x = 158,068,266,084
5. Step 5: Solve for x
   x = 158,068,266,084/186,592.50
6. Step 6: Final answer
   x = 847,130.87