Finding the Third Proportional to 55,509.75 and 84,646.69

Step by Step Solution

1. Step 1: Write the proportion equation
   55,509.75 : 84,646.69 = 84,646.69 : x
2. Step 2: Convert to fraction form
   55,509.75/84,646.69 = 84,646.69/x
3. Step 3: Cross multiply
   55,509.75x = 84,646.69 × 84,646.69
4. Step 4: Simplify right side
   55,509.75x = 7,165,061,704.72
5. Step 5: Solve for x
   x = 7,165,061,704.72/55,509.75
6. Step 6: Final answer
   x = 129,077.54