Finding the Third Proportional to 291,648 and 636,000

Step by Step Solution

1. Step 1: Write the proportion equation
   291,648 : 636,000 = 636,000 : x
2. Step 2: Convert to fraction form
   291,648/636,000 = 636,000/x
3. Step 3: Cross multiply
   291,648x = 636,000 × 636,000
4. Step 4: Simplify right side
   291,648x = 404,496,000,000
5. Step 5: Solve for x
   x = 404,496,000,000/291,648
6. Step 6: Final answer
   x = 1,386,932.19