Finding the Third Proportional to 88,858 and 187,690

Step by Step Solution

1. Step 1: Write the proportion equation
   88,858 : 187,690 = 187,690 : x
2. Step 2: Convert to fraction form
   88,858/187,690 = 187,690/x
3. Step 3: Cross multiply
   88,858x = 187,690 × 187,690
4. Step 4: Simplify right side
   88,858x = 35,227,536,100
5. Step 5: Solve for x
   x = 35,227,536,100/88,858
6. Step 6: Final answer
   x = 396,447.55