Finding the Third Proportional to 152,674 and 309,660

Step by Step Solution

1. Step 1: Write the proportion equation
   152,674 : 309,660 = 309,660 : x
2. Step 2: Convert to fraction form
   152,674/309,660 = 309,660/x
3. Step 3: Cross multiply
   152,674x = 309,660 × 309,660
4. Step 4: Simplify right side
   152,674x = 95,889,315,600
5. Step 5: Solve for x
   x = 95,889,315,600/152,674
6. Step 6: Final answer
   x = 628,065.78