Finding the Third Proportional to 86,259.38 and 187,706.25

Step by Step Solution

1. Step 1: Write the proportion equation
   86,259.38 : 187,706.25 = 187,706.25 : x
2. Step 2: Convert to fraction form
   86,259.38/187,706.25 = 187,706.25/x
3. Step 3: Cross multiply
   86,259.38x = 187,706.25 × 187,706.25
4. Step 4: Simplify right side
   86,259.38x = 35,233,636,289.06
5. Step 5: Solve for x
   x = 35,233,636,289.06/86,259.38
6. Step 6: Final answer
   x = 408,461.53