Finding the Third Proportional to 447,808.50 and 671,436

Step by Step Solution

1. Step 1: Write the proportion equation
   447,808.50 : 671,436 = 671,436 : x
2. Step 2: Convert to fraction form
   447,808.50/671,436 = 671,436/x
3. Step 3: Cross multiply
   447,808.50x = 671,436 × 671,436
4. Step 4: Simplify right side
   447,808.50x = 450,826,302,096
5. Step 5: Solve for x
   x = 450,826,302,096/447,808.50
6. Step 6: Final answer
   x = 1,006,739.05