Finding the Third Proportional to 53,905.50 and 81,602.44

Step by Step Solution

1. Step 1: Write the proportion equation
   53,905.50 : 81,602.44 = 81,602.44 : x
2. Step 2: Convert to fraction form
   53,905.50/81,602.44 = 81,602.44/x
3. Step 3: Cross multiply
   53,905.50x = 81,602.44 × 81,602.44
4. Step 4: Simplify right side
   53,905.50x = 6,658,957,805.94
5. Step 5: Solve for x
   x = 6,658,957,805.94/53,905.50
6. Step 6: Final answer
   x = 123,530.21