Finding the Third Proportional to 406,479.38 and 603,823.50

Step by Step Solution

1. Step 1: Write the proportion equation
   406,479.38 : 603,823.50 = 603,823.50 : x
2. Step 2: Convert to fraction form
   406,479.38/603,823.50 = 603,823.50/x
3. Step 3: Cross multiply
   406,479.38x = 603,823.50 × 603,823.50
4. Step 4: Simplify right side
   406,479.38x = 364,602,819,152.25
5. Step 5: Solve for x
   x = 364,602,819,152.25/406,479.38
6. Step 6: Final answer
   x = 896,977.42