Finding the Third Proportional to 85,789 and 123,762

Step by Step Solution

1. Step 1: Write the proportion equation
   85,789 : 123,762 = 123,762 : x
2. Step 2: Convert to fraction form
   85,789/123,762 = 123,762/x
3. Step 3: Cross multiply
   85,789x = 123,762 × 123,762
4. Step 4: Simplify right side
   85,789x = 15,317,032,644
5. Step 5: Solve for x
   x = 15,317,032,644/85,789
6. Step 6: Final answer
   x = 178,543.08