Finding the Third Proportional to 40,570 and 60,687

Step by Step Solution

1. Step 1: Write the proportion equation
   40,570 : 60,687 = 60,687 : x
2. Step 2: Convert to fraction form
   40,570/60,687 = 60,687/x
3. Step 3: Cross multiply
   40,570x = 60,687 × 60,687
4. Step 4: Simplify right side
   40,570x = 3,682,911,969
5. Step 5: Solve for x
   x = 3,682,911,969/40,570
6. Step 6: Final answer
   x = 90,779.20