Finding the Third Proportional to 79,640 and 124,300

Step by Step Solution

1. Step 1: Write the proportion equation
   79,640 : 124,300 = 124,300 : x
2. Step 2: Convert to fraction form
   79,640/124,300 = 124,300/x
3. Step 3: Cross multiply
   79,640x = 124,300 × 124,300
4. Step 4: Simplify right side
   79,640x = 15,450,490,000
5. Step 5: Solve for x
   x = 15,450,490,000/79,640
6. Step 6: Final answer
   x = 194,004.14