Finding the Third Proportional to 57,442 and 85,819

Step by Step Solution

1. Step 1: Write the proportion equation
   57,442 : 85,819 = 85,819 : x
2. Step 2: Convert to fraction form
   57,442/85,819 = 85,819/x
3. Step 3: Cross multiply
   57,442x = 85,819 × 85,819
4. Step 4: Simplify right side
   57,442x = 7,364,900,761
5. Step 5: Solve for x
   x = 7,364,900,761/57,442
6. Step 6: Final answer
   x = 128,214.56