Finding the Third Proportional to 53,116 and 80,988

Step by Step Solution

1. Step 1: Write the proportion equation
   53,116 : 80,988 = 80,988 : x
2. Step 2: Convert to fraction form
   53,116/80,988 = 80,988/x
3. Step 3: Cross multiply
   53,116x = 80,988 × 80,988
4. Step 4: Simplify right side
   53,116x = 6,559,056,144
5. Step 5: Solve for x
   x = 6,559,056,144/53,116
6. Step 6: Final answer
   x = 123,485.51