Finding the Third Proportional to 54,551.25 and 83,828.25

Step by Step Solution

1. Step 1: Write the proportion equation
   54,551.25 : 83,828.25 = 83,828.25 : x
2. Step 2: Convert to fraction form
   54,551.25/83,828.25 = 83,828.25/x
3. Step 3: Cross multiply
   54,551.25x = 83,828.25 × 83,828.25
4. Step 4: Simplify right side
   54,551.25x = 7,027,175,498.06
5. Step 5: Solve for x
   x = 7,027,175,498.06/54,551.25
6. Step 6: Final answer
   x = 128,817.86