Finding the Third Proportional to 152,870 and 231,612

Step by Step Solution

1. Step 1: Write the proportion equation
   152,870 : 231,612 = 231,612 : x
2. Step 2: Convert to fraction form
   152,870/231,612 = 231,612/x
3. Step 3: Cross multiply
   152,870x = 231,612 × 231,612
4. Step 4: Simplify right side
   152,870x = 53,644,118,544
5. Step 5: Solve for x
   x = 53,644,118,544/152,870
6. Step 6: Final answer
   x = 350,913.32