Finding the Third Proportional to 57,434.38 and 85,805.58

Step by Step Solution

1. Step 1: Write the proportion equation
   57,434.38 : 85,805.58 = 85,805.58 : x
2. Step 2: Convert to fraction form
   57,434.38/85,805.58 = 85,805.58/x
3. Step 3: Cross multiply
   57,434.38x = 85,805.58 × 85,805.58
4. Step 4: Simplify right side
   57,434.38x = 7,362,597,237.37
5. Step 5: Solve for x
   x = 7,362,597,237.37/57,434.38
6. Step 6: Final answer
   x = 128,191.47