Finding the Third Proportional to 406,917 and 599,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   406,917 : 599,131.50 = 599,131.50 : x
2. Step 2: Convert to fraction form
   406,917/599,131.50 = 599,131.50/x
3. Step 3: Cross multiply
   406,917x = 599,131.50 × 599,131.50
4. Step 4: Simplify right side
   406,917x = 358,958,554,292.25
5. Step 5: Solve for x
   x = 358,958,554,292.25/406,917
6. Step 6: Final answer
   x = 882,141.95