Finding the Third Proportional to 54,664.50 and 84,331.69

Step by Step Solution

1. Step 1: Write the proportion equation
   54,664.50 : 84,331.69 = 84,331.69 : x
2. Step 2: Convert to fraction form
   54,664.50/84,331.69 = 84,331.69/x
3. Step 3: Cross multiply
   54,664.50x = 84,331.69 × 84,331.69
4. Step 4: Simplify right side
   54,664.50x = 7,111,833,516.60
5. Step 5: Solve for x
   x = 7,111,833,516.60/54,664.50
6. Step 6: Final answer
   x = 130,099.67