Finding the Third Proportional to 345,217 and 740,162

Step by Step Solution

1. Step 1: Write the proportion equation
   345,217 : 740,162 = 740,162 : x
2. Step 2: Convert to fraction form
   345,217/740,162 = 740,162/x
3. Step 3: Cross multiply
   345,217x = 740,162 × 740,162
4. Step 4: Simplify right side
   345,217x = 547,839,786,244
5. Step 5: Solve for x
   x = 547,839,786,244/345,217
6. Step 6: Final answer
   x = 1,586,943.25