Finding the Third Proportional to 103,980 and 156,900

Step by Step Solution

1. Step 1: Write the proportion equation
   103,980 : 156,900 = 156,900 : x
2. Step 2: Convert to fraction form
   103,980/156,900 = 156,900/x
3. Step 3: Cross multiply
   103,980x = 156,900 × 156,900
4. Step 4: Simplify right side
   103,980x = 24,617,610,000
5. Step 5: Solve for x
   x = 24,617,610,000/103,980
6. Step 6: Final answer
   x = 236,753.32