Finding the Third Proportional to 411,975 and 637,564.50

Step by Step Solution

1. Step 1: Write the proportion equation
   411,975 : 637,564.50 = 637,564.50 : x
2. Step 2: Convert to fraction form
   411,975/637,564.50 = 637,564.50/x
3. Step 3: Cross multiply
   411,975x = 637,564.50 × 637,564.50
4. Step 4: Simplify right side
   411,975x = 406,488,491,660.25
5. Step 5: Solve for x
   x = 406,488,491,660.25/411,975
6. Step 6: Final answer
   x = 986,682.42