Finding the Third Proportional to 53,532 and 82,890

Step by Step Solution

1. Step 1: Write the proportion equation
   53,532 : 82,890 = 82,890 : x
2. Step 2: Convert to fraction form
   53,532/82,890 = 82,890/x
3. Step 3: Cross multiply
   53,532x = 82,890 × 82,890
4. Step 4: Simplify right side
   53,532x = 6,870,752,100
5. Step 5: Solve for x
   x = 6,870,752,100/53,532
6. Step 6: Final answer
   x = 128,348.50