Finding the Third Proportional to 86,881.50 and 188,424

Step by Step Solution

1. Step 1: Write the proportion equation
   86,881.50 : 188,424 = 188,424 : x
2. Step 2: Convert to fraction form
   86,881.50/188,424 = 188,424/x
3. Step 3: Cross multiply
   86,881.50x = 188,424 × 188,424
4. Step 4: Simplify right side
   86,881.50x = 35,503,603,776
5. Step 5: Solve for x
   x = 35,503,603,776/86,881.50
6. Step 6: Final answer
   x = 408,644.00