Finding the Third Proportional to 72,355 and 108,989

Step by Step Solution

1. Step 1: Write the proportion equation
   72,355 : 108,989 = 108,989 : x
2. Step 2: Convert to fraction form
   72,355/108,989 = 108,989/x
3. Step 3: Cross multiply
   72,355x = 108,989 × 108,989
4. Step 4: Simplify right side
   72,355x = 11,878,602,121
5. Step 5: Solve for x
   x = 11,878,602,121/72,355
6. Step 6: Final answer
   x = 164,171.13