Finding the Third Proportional to 257,483 and 521,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   257,483 : 521,969.50 = 521,969.50 : x
2. Step 2: Convert to fraction form
   257,483/521,969.50 = 521,969.50/x
3. Step 3: Cross multiply
   257,483x = 521,969.50 × 521,969.50
4. Step 4: Simplify right side
   257,483x = 272,452,158,930.25
5. Step 5: Solve for x
   x = 272,452,158,930.25/257,483
6. Step 6: Final answer
   x = 1,058,136.49