Finding the Third Proportional to 54,429.50 and 84,106.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,429.50 : 84,106.50 = 84,106.50 : x
2. Step 2: Convert to fraction form
   54,429.50/84,106.50 = 84,106.50/x
3. Step 3: Cross multiply
   54,429.50x = 84,106.50 × 84,106.50
4. Step 4: Simplify right side
   54,429.50x = 7,073,903,342.25
5. Step 5: Solve for x
   x = 7,073,903,342.25/54,429.50
6. Step 6: Final answer
   x = 129,964.51