Finding the Third Proportional to 72,111 and 98,931

Step by Step Solution

1. Step 1: Write the proportion equation
   72,111 : 98,931 = 98,931 : x
2. Step 2: Convert to fraction form
   72,111/98,931 = 98,931/x
3. Step 3: Cross multiply
   72,111x = 98,931 × 98,931
4. Step 4: Simplify right side
   72,111x = 9,787,342,761
5. Step 5: Solve for x
   x = 9,787,342,761/72,111
6. Step 6: Final answer
   x = 135,726.07