Finding the Third Proportional to 90,142.88 and 140,130

Step by Step Solution

1. Step 1: Write the proportion equation
   90,142.88 : 140,130 = 140,130 : x
2. Step 2: Convert to fraction form
   90,142.88/140,130 = 140,130/x
3. Step 3: Cross multiply
   90,142.88x = 140,130 × 140,130
4. Step 4: Simplify right side
   90,142.88x = 19,636,416,900
5. Step 5: Solve for x
   x = 19,636,416,900/90,142.88
6. Step 6: Final answer
   x = 217,836.59