Finding the Third Proportional to 39,859 and 85,442

Step by Step Solution

1. Step 1: Write the proportion equation
   39,859 : 85,442 = 85,442 : x
2. Step 2: Convert to fraction form
   39,859/85,442 = 85,442/x
3. Step 3: Cross multiply
   39,859x = 85,442 × 85,442
4. Step 4: Simplify right side
   39,859x = 7,300,335,364
5. Step 5: Solve for x
   x = 7,300,335,364/39,859
6. Step 6: Final answer
   x = 183,154.00