Finding the Third Proportional to 291,936 and 628,890

Step by Step Solution

1. Step 1: Write the proportion equation
   291,936 : 628,890 = 628,890 : x
2. Step 2: Convert to fraction form
   291,936/628,890 = 628,890/x
3. Step 3: Cross multiply
   291,936x = 628,890 × 628,890
4. Step 4: Simplify right side
   291,936x = 395,502,632,100
5. Step 5: Solve for x
   x = 395,502,632,100/291,936
6. Step 6: Final answer
   x = 1,354,758.00