Finding the Third Proportional to 188,112 and 402,108

Step by Step Solution

1. Step 1: Write the proportion equation
   188,112 : 402,108 = 402,108 : x
2. Step 2: Convert to fraction form
   188,112/402,108 = 402,108/x
3. Step 3: Cross multiply
   188,112x = 402,108 × 402,108
4. Step 4: Simplify right side
   188,112x = 161,690,843,664
5. Step 5: Solve for x
   x = 161,690,843,664/188,112
6. Step 6: Final answer
   x = 859,545.61