Finding the Third Proportional to 42,897.09 and 65,621.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,897.09 : 65,621.39 = 65,621.39 : x
2. Step 2: Convert to fraction form
   42,897.09/65,621.39 = 65,621.39/x
3. Step 3: Cross multiply
   42,897.09x = 65,621.39 × 65,621.39
4. Step 4: Simplify right side
   42,897.09x = 4,306,166,907.56
5. Step 5: Solve for x
   x = 4,306,166,907.56/42,897.09
6. Step 6: Final answer
   x = 100,383.65