Finding the Third Proportional to 188,012 and 287,970

Step by Step Solution

1. Step 1: Write the proportion equation
   188,012 : 287,970 = 287,970 : x
2. Step 2: Convert to fraction form
   188,012/287,970 = 287,970/x
3. Step 3: Cross multiply
   188,012x = 287,970 × 287,970
4. Step 4: Simplify right side
   188,012x = 82,926,720,900
5. Step 5: Solve for x
   x = 82,926,720,900/188,012
6. Step 6: Final answer
   x = 441,071.43