Finding the Third Proportional to 53,109 and 72,164.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,109 : 72,164.25 = 72,164.25 : x
2. Step 2: Convert to fraction form
   53,109/72,164.25 = 72,164.25/x
3. Step 3: Cross multiply
   53,109x = 72,164.25 × 72,164.25
4. Step 4: Simplify right side
   53,109x = 5,207,678,978.06
5. Step 5: Solve for x
   x = 5,207,678,978.06/53,109
6. Step 6: Final answer
   x = 98,056.43