Finding the Third Proportional to 291,926 and 628,870

Step by Step Solution

1. Step 1: Write the proportion equation
   291,926 : 628,870 = 628,870 : x
2. Step 2: Convert to fraction form
   291,926/628,870 = 628,870/x
3. Step 3: Cross multiply
   291,926x = 628,870 × 628,870
4. Step 4: Simplify right side
   291,926x = 395,477,476,900
5. Step 5: Solve for x
   x = 395,477,476,900/291,926
6. Step 6: Final answer
   x = 1,354,718.24