Finding the Third Proportional to 411,969 and 637,555.50

Step by Step Solution

1. Step 1: Write the proportion equation
   411,969 : 637,555.50 = 637,555.50 : x
2. Step 2: Convert to fraction form
   411,969/637,555.50 = 637,555.50/x
3. Step 3: Cross multiply
   411,969x = 637,555.50 × 637,555.50
4. Step 4: Simplify right side
   411,969x = 406,477,015,580.25
5. Step 5: Solve for x
   x = 406,477,015,580.25/411,969
6. Step 6: Final answer
   x = 986,668.94