Finding the Third Proportional to 39,130 and 76,300

Step by Step Solution

1. Step 1: Write the proportion equation
   39,130 : 76,300 = 76,300 : x
2. Step 2: Convert to fraction form
   39,130/76,300 = 76,300/x
3. Step 3: Cross multiply
   39,130x = 76,300 × 76,300
4. Step 4: Simplify right side
   39,130x = 5,821,690,000
5. Step 5: Solve for x
   x = 5,821,690,000/39,130
6. Step 6: Final answer
   x = 148,778.18