Finding the Third Proportional to 77,601 and 123,987

Step by Step Solution

1. Step 1: Write the proportion equation
   77,601 : 123,987 = 123,987 : x
2. Step 2: Convert to fraction form
   77,601/123,987 = 123,987/x
3. Step 3: Cross multiply
   77,601x = 123,987 × 123,987
4. Step 4: Simplify right side
   77,601x = 15,372,776,169
5. Step 5: Solve for x
   x = 15,372,776,169/77,601
6. Step 6: Final answer
   x = 198,100.23