Finding the Third Proportional to 158,126 and 345,436

Step by Step Solution

1. Step 1: Write the proportion equation
   158,126 : 345,436 = 345,436 : x
2. Step 2: Convert to fraction form
   158,126/345,436 = 345,436/x
3. Step 3: Cross multiply
   158,126x = 345,436 × 345,436
4. Step 4: Simplify right side
   158,126x = 119,326,030,096
5. Step 5: Solve for x
   x = 119,326,030,096/158,126
6. Step 6: Final answer
   x = 754,626.25