Finding the Third Proportional to 61,442 and 89,987

Step by Step Solution

1. Step 1: Write the proportion equation
   61,442 : 89,987 = 89,987 : x
2. Step 2: Convert to fraction form
   61,442/89,987 = 89,987/x
3. Step 3: Cross multiply
   61,442x = 89,987 × 89,987
4. Step 4: Simplify right side
   61,442x = 8,097,660,169
5. Step 5: Solve for x
   x = 8,097,660,169/61,442
6. Step 6: Final answer
   x = 131,793.56