Finding the Third Proportional to 59,190 and 129,300

Step by Step Solution

1. Step 1: Write the proportion equation
   59,190 : 129,300 = 129,300 : x
2. Step 2: Convert to fraction form
   59,190/129,300 = 129,300/x
3. Step 3: Cross multiply
   59,190x = 129,300 × 129,300
4. Step 4: Simplify right side
   59,190x = 16,718,490,000
5. Step 5: Solve for x
   x = 16,718,490,000/59,190
6. Step 6: Final answer
   x = 282,454.64