Finding the Third Proportional to 131,473 and 287,824

Step by Step Solution

1. Step 1: Write the proportion equation
   131,473 : 287,824 = 287,824 : x
2. Step 2: Convert to fraction form
   131,473/287,824 = 287,824/x
3. Step 3: Cross multiply
   131,473x = 287,824 × 287,824
4. Step 4: Simplify right side
   131,473x = 82,842,654,976
5. Step 5: Solve for x
   x = 82,842,654,976/131,473
6. Step 6: Final answer
   x = 630,111.54