Finding the Third Proportional to 188,108 and 402,100

Step by Step Solution

1. Step 1: Write the proportion equation
   188,108 : 402,100 = 402,100 : x
2. Step 2: Convert to fraction form
   188,108/402,100 = 402,100/x
3. Step 3: Cross multiply
   188,108x = 402,100 × 402,100
4. Step 4: Simplify right side
   188,108x = 161,684,410,000
5. Step 5: Solve for x
   x = 161,684,410,000/188,108
6. Step 6: Final answer
   x = 859,529.69