Finding the Third Proportional to 53,439.75 and 84,615.94

Step by Step Solution

1. Step 1: Write the proportion equation
   53,439.75 : 84,615.94 = 84,615.94 : x
2. Step 2: Convert to fraction form
   53,439.75/84,615.94 = 84,615.94/x
3. Step 3: Cross multiply
   53,439.75x = 84,615.94 × 84,615.94
4. Step 4: Simplify right side
   53,439.75x = 7,159,856,879.00
5. Step 5: Solve for x
   x = 7,159,856,879.00/53,439.75
6. Step 6: Final answer
   x = 133,979.98