Finding the Third Proportional to 80,428 and 118,300

Step by Step Solution

1. Step 1: Write the proportion equation
   80,428 : 118,300 = 118,300 : x
2. Step 2: Convert to fraction form
   80,428/118,300 = 118,300/x
3. Step 3: Cross multiply
   80,428x = 118,300 × 118,300
4. Step 4: Simplify right side
   80,428x = 13,994,890,000
5. Step 5: Solve for x
   x = 13,994,890,000/80,428
6. Step 6: Final answer
   x = 174,005.20