Finding the Third Proportional to 156,170 and 342,436

Step by Step Solution

1. Step 1: Write the proportion equation
   156,170 : 342,436 = 342,436 : x
2. Step 2: Convert to fraction form
   156,170/342,436 = 342,436/x
3. Step 3: Cross multiply
   156,170x = 342,436 × 342,436
4. Step 4: Simplify right side
   156,170x = 117,262,414,096
5. Step 5: Solve for x
   x = 117,262,414,096/156,170
6. Step 6: Final answer
   x = 750,863.89