Finding the Third Proportional to 152,613 and 319,166

Step by Step Solution

1. Step 1: Write the proportion equation
   152,613 : 319,166 = 319,166 : x
2. Step 2: Convert to fraction form
   152,613/319,166 = 319,166/x
3. Step 3: Cross multiply
   152,613x = 319,166 × 319,166
4. Step 4: Simplify right side
   152,613x = 101,866,935,556
5. Step 5: Solve for x
   x = 101,866,935,556/152,613
6. Step 6: Final answer
   x = 667,485.31