Finding the Third Proportional to 440,517 and 635,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   440,517 : 635,980.50 = 635,980.50 : x
2. Step 2: Convert to fraction form
   440,517/635,980.50 = 635,980.50/x
3. Step 3: Cross multiply
   440,517x = 635,980.50 × 635,980.50
4. Step 4: Simplify right side
   440,517x = 404,471,196,380.25
5. Step 5: Solve for x
   x = 404,471,196,380.25/440,517
6. Step 6: Final answer
   x = 918,173.86