Finding the Third Proportional to 86,040 and 187,632

Step by Step Solution

1. Step 1: Write the proportion equation
   86,040 : 187,632 = 187,632 : x
2. Step 2: Convert to fraction form
   86,040/187,632 = 187,632/x
3. Step 3: Cross multiply
   86,040x = 187,632 × 187,632
4. Step 4: Simplify right side
   86,040x = 35,205,767,424
5. Step 5: Solve for x
   x = 35,205,767,424/86,040
6. Step 6: Final answer
   x = 409,179.07