Finding the Third Proportional to 90,154 and 130,578

Step by Step Solution

1. Step 1: Write the proportion equation
   90,154 : 130,578 = 130,578 : x
2. Step 2: Convert to fraction form
   90,154/130,578 = 130,578/x
3. Step 3: Cross multiply
   90,154x = 130,578 × 130,578
4. Step 4: Simplify right side
   90,154x = 17,050,614,084
5. Step 5: Solve for x
   x = 17,050,614,084/90,154
6. Step 6: Final answer
   x = 189,127.65