Finding the Third Proportional to 267,616 and 394,031.50

Step by Step Solution

1. Step 1: Write the proportion equation
   267,616 : 394,031.50 = 394,031.50 : x
2. Step 2: Convert to fraction form
   267,616/394,031.50 = 394,031.50/x
3. Step 3: Cross multiply
   267,616x = 394,031.50 × 394,031.50
4. Step 4: Simplify right side
   267,616x = 155,260,822,992.25
5. Step 5: Solve for x
   x = 155,260,822,992.25/267,616
6. Step 6: Final answer
   x = 580,162.71