Finding the Third Proportional to 86,255 and 188,602

Step by Step Solution

1. Step 1: Write the proportion equation
   86,255 : 188,602 = 188,602 : x
2. Step 2: Convert to fraction form
   86,255/188,602 = 188,602/x
3. Step 3: Cross multiply
   86,255x = 188,602 × 188,602
4. Step 4: Simplify right side
   86,255x = 35,570,714,404
5. Step 5: Solve for x
   x = 35,570,714,404/86,255
6. Step 6: Final answer
   x = 412,390.17