Finding the Third Proportional to 53,931.75 and 84,418.69

Step by Step Solution

1. Step 1: Write the proportion equation
   53,931.75 : 84,418.69 = 84,418.69 : x
2. Step 2: Convert to fraction form
   53,931.75/84,418.69 = 84,418.69/x
3. Step 3: Cross multiply
   53,931.75x = 84,418.69 × 84,418.69
4. Step 4: Simplify right side
   53,931.75x = 7,126,514,799.22
5. Step 5: Solve for x
   x = 7,126,514,799.22/53,931.75
6. Step 6: Final answer
   x = 132,139.51