Finding the Third Proportional to 406,410 and 603,726.75

Step by Step Solution

1. Step 1: Write the proportion equation
   406,410 : 603,726.75 = 603,726.75 : x
2. Step 2: Convert to fraction form
   406,410/603,726.75 = 603,726.75/x
3. Step 3: Cross multiply
   406,410x = 603,726.75 × 603,726.75
4. Step 4: Simplify right side
   406,410x = 364,485,988,665.56
5. Step 5: Solve for x
   x = 364,485,988,665.56/406,410
6. Step 6: Final answer
   x = 896,843.06