Finding the Third Proportional to 90,121.50 and 130,536

Step by Step Solution

1. Step 1: Write the proportion equation
   90,121.50 : 130,536 = 130,536 : x
2. Step 2: Convert to fraction form
   90,121.50/130,536 = 130,536/x
3. Step 3: Cross multiply
   90,121.50x = 130,536 × 130,536
4. Step 4: Simplify right side
   90,121.50x = 17,039,647,296
5. Step 5: Solve for x
   x = 17,039,647,296/90,121.50
6. Step 6: Final answer
   x = 189,074.16