Finding the Third Proportional to 84,217.25 and 123,039.75

Step by Step Solution

1. Step 1: Write the proportion equation
   84,217.25 : 123,039.75 = 123,039.75 : x
2. Step 2: Convert to fraction form
   84,217.25/123,039.75 = 123,039.75/x
3. Step 3: Cross multiply
   84,217.25x = 123,039.75 × 123,039.75
4. Step 4: Simplify right side
   84,217.25x = 15,138,780,080.06
5. Step 5: Solve for x
   x = 15,138,780,080.06/84,217.25
6. Step 6: Final answer
   x = 179,758.66