Finding the Third Proportional to 188,158 and 402,502

Step by Step Solution

1. Step 1: Write the proportion equation
   188,158 : 402,502 = 402,502 : x
2. Step 2: Convert to fraction form
   188,158/402,502 = 402,502/x
3. Step 3: Cross multiply
   188,158x = 402,502 × 402,502
4. Step 4: Simplify right side
   188,158x = 162,007,860,004
5. Step 5: Solve for x
   x = 162,007,860,004/188,158
6. Step 6: Final answer
   x = 861,020.31