Finding the Third Proportional to 137,617.50 and 287,718

Step by Step Solution

1. Step 1: Write the proportion equation
   137,617.50 : 287,718 = 287,718 : x
2. Step 2: Convert to fraction form
   137,617.50/287,718 = 287,718/x
3. Step 3: Cross multiply
   137,617.50x = 287,718 × 287,718
4. Step 4: Simplify right side
   137,617.50x = 82,781,647,524
5. Step 5: Solve for x
   x = 82,781,647,524/137,617.50
6. Step 6: Final answer
   x = 601,534.31