Finding the Third Proportional to 418,206 and 890,356.50

Step by Step Solution

1. Step 1: Write the proportion equation
   418,206 : 890,356.50 = 890,356.50 : x
2. Step 2: Convert to fraction form
   418,206/890,356.50 = 890,356.50/x
3. Step 3: Cross multiply
   418,206x = 890,356.50 × 890,356.50
4. Step 4: Simplify right side
   418,206x = 792,734,697,092.25
5. Step 5: Solve for x
   x = 792,734,697,092.25/418,206
6. Step 6: Final answer
   x = 1,895,560.31