Finding the Third Proportional to 186,726 and 287,010

Step by Step Solution

1. Step 1: Write the proportion equation
   186,726 : 287,010 = 287,010 : x
2. Step 2: Convert to fraction form
   186,726/287,010 = 287,010/x
3. Step 3: Cross multiply
   186,726x = 287,010 × 287,010
4. Step 4: Simplify right side
   186,726x = 82,374,740,100
5. Step 5: Solve for x
   x = 82,374,740,100/186,726
6. Step 6: Final answer
   x = 441,153.03