Finding the Third Proportional to 60,300 and 130,640

Step by Step Solution

1. Step 1: Write the proportion equation
   60,300 : 130,640 = 130,640 : x
2. Step 2: Convert to fraction form
   60,300/130,640 = 130,640/x
3. Step 3: Cross multiply
   60,300x = 130,640 × 130,640
4. Step 4: Simplify right side
   60,300x = 17,066,809,600
5. Step 5: Solve for x
   x = 17,066,809,600/60,300
6. Step 6: Final answer
   x = 283,031.67