Finding the Third Proportional to 91,578 and 130,710

Step by Step Solution

1. Step 1: Write the proportion equation
   91,578 : 130,710 = 130,710 : x
2. Step 2: Convert to fraction form
   91,578/130,710 = 130,710/x
3. Step 3: Cross multiply
   91,578x = 130,710 × 130,710
4. Step 4: Simplify right side
   91,578x = 17,085,104,100
5. Step 5: Solve for x
   x = 17,085,104,100/91,578
6. Step 6: Final answer
   x = 186,563.41