Finding the Third Proportional to 267,642.50 and 394,071

Step by Step Solution

1. Step 1: Write the proportion equation
   267,642.50 : 394,071 = 394,071 : x
2. Step 2: Convert to fraction form
   267,642.50/394,071 = 394,071/x
3. Step 3: Cross multiply
   267,642.50x = 394,071 × 394,071
4. Step 4: Simplify right side
   267,642.50x = 155,291,953,041
5. Step 5: Solve for x
   x = 155,291,953,041/267,642.50
6. Step 6: Final answer
   x = 580,221.58