Finding the Third Proportional to 188,151 and 402,488

Step by Step Solution

1. Step 1: Write the proportion equation
   188,151 : 402,488 = 402,488 : x
2. Step 2: Convert to fraction form
   188,151/402,488 = 402,488/x
3. Step 3: Cross multiply
   188,151x = 402,488 × 402,488
4. Step 4: Simplify right side
   188,151x = 161,996,590,144
5. Step 5: Solve for x
   x = 161,996,590,144/188,151
6. Step 6: Final answer
   x = 860,992.45