Finding the Third Proportional to 86,328 and 187,060.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,328 : 187,060.50 = 187,060.50 : x
2. Step 2: Convert to fraction form
   86,328/187,060.50 = 187,060.50/x
3. Step 3: Cross multiply
   86,328x = 187,060.50 × 187,060.50
4. Step 4: Simplify right side
   86,328x = 34,991,630,660.25
5. Step 5: Solve for x
   x = 34,991,630,660.25/86,328
6. Step 6: Final answer
   x = 405,333.50