Finding the Third Proportional to 54,051.19 and 83,979.56

Step by Step Solution

1. Step 1: Write the proportion equation
   54,051.19 : 83,979.56 = 83,979.56 : x
2. Step 2: Convert to fraction form
   54,051.19/83,979.56 = 83,979.56/x
3. Step 3: Cross multiply
   54,051.19x = 83,979.56 × 83,979.56
4. Step 4: Simplify right side
   54,051.19x = 7,052,566,917.69
5. Step 5: Solve for x
   x = 7,052,566,917.69/54,051.19
6. Step 6: Final answer
   x = 130,479.41