Finding the Third Proportional to 86,130 and 123,300

Step by Step Solution

1. Step 1: Write the proportion equation
   86,130 : 123,300 = 123,300 : x
2. Step 2: Convert to fraction form
   86,130/123,300 = 123,300/x
3. Step 3: Cross multiply
   86,130x = 123,300 × 123,300
4. Step 4: Simplify right side
   86,130x = 15,202,890,000
5. Step 5: Solve for x
   x = 15,202,890,000/86,130
6. Step 6: Final answer
   x = 176,510.97