Finding the Third Proportional to 54,419.98 and 84,056.48

Step by Step Solution

1. Step 1: Write the proportion equation
   54,419.98 : 84,056.48 = 84,056.48 : x
2. Step 2: Convert to fraction form
   54,419.98/84,056.48 = 84,056.48/x
3. Step 3: Cross multiply
   54,419.98x = 84,056.48 × 84,056.48
4. Step 4: Simplify right side
   54,419.98x = 7,065,492,565.48
5. Step 5: Solve for x
   x = 7,065,492,565.48/54,419.98
6. Step 6: Final answer
   x = 129,832.70