Finding the Third Proportional to 291,612 and 635,928

Step by Step Solution

1. Step 1: Write the proportion equation
   291,612 : 635,928 = 635,928 : x
2. Step 2: Convert to fraction form
   291,612/635,928 = 635,928/x
3. Step 3: Cross multiply
   291,612x = 635,928 × 635,928
4. Step 4: Simplify right side
   291,612x = 404,404,421,184
5. Step 5: Solve for x
   x = 404,404,421,184/291,612
6. Step 6: Final answer
   x = 1,386,789.37