Finding the Third Proportional to 86,330 and 187,065

Step by Step Solution

1. Step 1: Write the proportion equation
   86,330 : 187,065 = 187,065 : x
2. Step 2: Convert to fraction form
   86,330/187,065 = 187,065/x
3. Step 3: Cross multiply
   86,330x = 187,065 × 187,065
4. Step 4: Simplify right side
   86,330x = 34,993,314,225
5. Step 5: Solve for x
   x = 34,993,314,225/86,330
6. Step 6: Final answer
   x = 405,343.61