Finding the Third Proportional to 57,135.38 and 87,890.06

Step by Step Solution

1. Step 1: Write the proportion equation
   57,135.38 : 87,890.06 = 87,890.06 : x
2. Step 2: Convert to fraction form
   57,135.38/87,890.06 = 87,890.06/x
3. Step 3: Cross multiply
   57,135.38x = 87,890.06 × 87,890.06
4. Step 4: Simplify right side
   57,135.38x = 7,724,663,086.25
5. Step 5: Solve for x
   x = 7,724,663,086.25/57,135.38
6. Step 6: Final answer
   x = 135,199.31