Finding the Third Proportional to 417,702 and 672,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   417,702 : 672,561.50 = 672,561.50 : x
2. Step 2: Convert to fraction form
   417,702/672,561.50 = 672,561.50/x
3. Step 3: Cross multiply
   417,702x = 672,561.50 × 672,561.50
4. Step 4: Simplify right side
   417,702x = 452,338,971,282.25
5. Step 5: Solve for x
   x = 452,338,971,282.25/417,702
6. Step 6: Final answer
   x = 1,082,922.68