Finding the Third Proportional to 158,654 and 345,710

Step by Step Solution

1. Step 1: Write the proportion equation
   158,654 : 345,710 = 345,710 : x
2. Step 2: Convert to fraction form
   158,654/345,710 = 345,710/x
3. Step 3: Cross multiply
   158,654x = 345,710 × 345,710
4. Step 4: Simplify right side
   158,654x = 119,515,404,100
5. Step 5: Solve for x
   x = 119,515,404,100/158,654
6. Step 6: Final answer
   x = 753,308.48