Finding the Third Proportional to 315,585 and 443,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,585 : 443,893.50 = 443,893.50 : x
2. Step 2: Convert to fraction form
   315,585/443,893.50 = 443,893.50/x
3. Step 3: Cross multiply
   315,585x = 443,893.50 × 443,893.50
4. Step 4: Simplify right side
   315,585x = 197,041,439,342.25
5. Step 5: Solve for x
   x = 197,041,439,342.25/315,585
6. Step 6: Final answer
   x = 624,368.84