Finding the Third Proportional to 417,795 and 636,484.50

Step by Step Solution

1. Step 1: Write the proportion equation
   417,795 : 636,484.50 = 636,484.50 : x
2. Step 2: Convert to fraction form
   417,795/636,484.50 = 636,484.50/x
3. Step 3: Cross multiply
   417,795x = 636,484.50 × 636,484.50
4. Step 4: Simplify right side
   417,795x = 405,112,518,740.25
5. Step 5: Solve for x
   x = 405,112,518,740.25/417,795
6. Step 6: Final answer
   x = 969,644.25