Finding the Third Proportional to 53,697.28 and 81,224.34

Step by Step Solution

1. Step 1: Write the proportion equation
   53,697.28 : 81,224.34 = 81,224.34 : x
2. Step 2: Convert to fraction form
   53,697.28/81,224.34 = 81,224.34/x
3. Step 3: Cross multiply
   53,697.28x = 81,224.34 × 81,224.34
4. Step 4: Simplify right side
   53,697.28x = 6,597,394,017.62
5. Step 5: Solve for x
   x = 6,597,394,017.62/53,697.28
6. Step 6: Final answer
   x = 122,862.72