Finding the Third Proportional to 54,685.50 and 84,357.75

Step by Step Solution

1. Step 1: Write the proportion equation
   54,685.50 : 84,357.75 = 84,357.75 : x
2. Step 2: Convert to fraction form
   54,685.50/84,357.75 = 84,357.75/x
3. Step 3: Cross multiply
   54,685.50x = 84,357.75 × 84,357.75
4. Step 4: Simplify right side
   54,685.50x = 7,116,229,985.06
5. Step 5: Solve for x
   x = 7,116,229,985.06/54,685.50
6. Step 6: Final answer
   x = 130,130.11