Finding the Third Proportional to 302,571 and 411,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,571 : 411,124.50 = 411,124.50 : x
2. Step 2: Convert to fraction form
   302,571/411,124.50 = 411,124.50/x
3. Step 3: Cross multiply
   302,571x = 411,124.50 × 411,124.50
4. Step 4: Simplify right side
   302,571x = 169,023,354,500.25
5. Step 5: Solve for x
   x = 169,023,354,500.25/302,571
6. Step 6: Final answer
   x = 558,623.78