Finding the Third Proportional to 52,581.38 and 81,572.63

Step by Step Solution

1. Step 1: Write the proportion equation
   52,581.38 : 81,572.63 = 81,572.63 : x
2. Step 2: Convert to fraction form
   52,581.38/81,572.63 = 81,572.63/x
3. Step 3: Cross multiply
   52,581.38x = 81,572.63 × 81,572.63
4. Step 4: Simplify right side
   52,581.38x = 6,654,093,149.39
5. Step 5: Solve for x
   x = 6,654,093,149.39/52,581.38
6. Step 6: Final answer
   x = 126,548.48