Finding the Third Proportional to 361,407 and 482,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,407 : 482,980.50 = 482,980.50 : x
2. Step 2: Convert to fraction form
   361,407/482,980.50 = 482,980.50/x
3. Step 3: Cross multiply
   361,407x = 482,980.50 × 482,980.50
4. Step 4: Simplify right side
   361,407x = 233,270,163,380.25
5. Step 5: Solve for x
   x = 233,270,163,380.25/361,407
6. Step 6: Final answer
   x = 645,450.04