Finding the Third Proportional to 59,663 and 130,990

Step by Step Solution

1. Step 1: Write the proportion equation
   59,663 : 130,990 = 130,990 : x
2. Step 2: Convert to fraction form
   59,663/130,990 = 130,990/x
3. Step 3: Cross multiply
   59,663x = 130,990 × 130,990
4. Step 4: Simplify right side
   59,663x = 17,158,380,100
5. Step 5: Solve for x
   x = 17,158,380,100/59,663
6. Step 6: Final answer
   x = 287,588.29