Finding the Third Proportional to 86,515.50 and 185,970

Step by Step Solution

1. Step 1: Write the proportion equation
   86,515.50 : 185,970 = 185,970 : x
2. Step 2: Convert to fraction form
   86,515.50/185,970 = 185,970/x
3. Step 3: Cross multiply
   86,515.50x = 185,970 × 185,970
4. Step 4: Simplify right side
   86,515.50x = 34,584,840,900
5. Step 5: Solve for x
   x = 34,584,840,900/86,515.50
6. Step 6: Final answer
   x = 399,753.12