Finding the Third Proportional to 152,426 and 231,679

Step by Step Solution

1. Step 1: Write the proportion equation
   152,426 : 231,679 = 231,679 : x
2. Step 2: Convert to fraction form
   152,426/231,679 = 231,679/x
3. Step 3: Cross multiply
   152,426x = 231,679 × 231,679
4. Step 4: Simplify right side
   152,426x = 53,675,159,041
5. Step 5: Solve for x
   x = 53,675,159,041/152,426
6. Step 6: Final answer
   x = 352,139.13