Finding the Third Proportional to 81,486 and 171,821.25

Step by Step Solution

1. Step 1: Write the proportion equation
   81,486 : 171,821.25 = 171,821.25 : x
2. Step 2: Convert to fraction form
   81,486/171,821.25 = 171,821.25/x
3. Step 3: Cross multiply
   81,486x = 171,821.25 × 171,821.25
4. Step 4: Simplify right side
   81,486x = 29,522,541,951.56
5. Step 5: Solve for x
   x = 29,522,541,951.56/81,486
6. Step 6: Final answer
   x = 362,302.01