Finding the Third Proportional to 156,980 and 341,320

Step by Step Solution

1. Step 1: Write the proportion equation
   156,980 : 341,320 = 341,320 : x
2. Step 2: Convert to fraction form
   156,980/341,320 = 341,320/x
3. Step 3: Cross multiply
   156,980x = 341,320 × 341,320
4. Step 4: Simplify right side
   156,980x = 116,499,342,400
5. Step 5: Solve for x
   x = 116,499,342,400/156,980
6. Step 6: Final answer
   x = 742,128.57