Finding the Third Proportional to 90,612 and 130,005

Step by Step Solution

1. Step 1: Write the proportion equation
   90,612 : 130,005 = 130,005 : x
2. Step 2: Convert to fraction form
   90,612/130,005 = 130,005/x
3. Step 3: Cross multiply
   90,612x = 130,005 × 130,005
4. Step 4: Simplify right side
   90,612x = 16,901,300,025
5. Step 5: Solve for x
   x = 16,901,300,025/90,612
6. Step 6: Final answer
   x = 186,523.86