Finding the Third Proportional to 53,809.75 and 83,790.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,809.75 : 83,790.25 = 83,790.25 : x
2. Step 2: Convert to fraction form
   53,809.75/83,790.25 = 83,790.25/x
3. Step 3: Cross multiply
   53,809.75x = 83,790.25 × 83,790.25
4. Step 4: Simplify right side
   53,809.75x = 7,020,805,995.06
5. Step 5: Solve for x
   x = 7,020,805,995.06/53,809.75
6. Step 6: Final answer
   x = 130,474.61