Finding the Third Proportional to 405,598.50 and 636,233.63

Step by Step Solution

1. Step 1: Write the proportion equation
   405,598.50 : 636,233.63 = 636,233.63 : x
2. Step 2: Convert to fraction form
   405,598.50/636,233.63 = 636,233.63/x
3. Step 3: Cross multiply
   405,598.50x = 636,233.63 × 636,233.63
4. Step 4: Simplify right side
   405,598.50x = 404,793,225,580.64
5. Step 5: Solve for x
   x = 404,793,225,580.64/405,598.50
6. Step 6: Final answer
   x = 998,014.60