Finding the Third Proportional to 315,619 and 443,941.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,619 : 443,941.50 = 443,941.50 : x
2. Step 2: Convert to fraction form
   315,619/443,941.50 = 443,941.50/x
3. Step 3: Cross multiply
   315,619x = 443,941.50 × 443,941.50
4. Step 4: Simplify right side
   315,619x = 197,084,055,422.25
5. Step 5: Solve for x
   x = 197,084,055,422.25/315,619
6. Step 6: Final answer
   x = 624,436.60