Finding the Third Proportional to 159,156 and 345,436

Step by Step Solution

1. Step 1: Write the proportion equation
   159,156 : 345,436 = 345,436 : x
2. Step 2: Convert to fraction form
   159,156/345,436 = 345,436/x
3. Step 3: Cross multiply
   159,156x = 345,436 × 345,436
4. Step 4: Simplify right side
   159,156x = 119,326,030,096
5. Step 5: Solve for x
   x = 119,326,030,096/159,156
6. Step 6: Final answer
   x = 749,742.58