Finding the Third Proportional to 53,086.50 and 81,483.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,086.50 : 81,483.75 = 81,483.75 : x
2. Step 2: Convert to fraction form
   53,086.50/81,483.75 = 81,483.75/x
3. Step 3: Cross multiply
   53,086.50x = 81,483.75 × 81,483.75
4. Step 4: Simplify right side
   53,086.50x = 6,639,601,514.06
5. Step 5: Solve for x
   x = 6,639,601,514.06/53,086.50
6. Step 6: Final answer
   x = 125,071.37