Finding the Third Proportional to 53,479.50 and 83,144.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,479.50 : 83,144.25 = 83,144.25 : x
2. Step 2: Convert to fraction form
   53,479.50/83,144.25 = 83,144.25/x
3. Step 3: Cross multiply
   53,479.50x = 83,144.25 × 83,144.25
4. Step 4: Simplify right side
   53,479.50x = 6,912,966,308.06
5. Step 5: Solve for x
   x = 6,912,966,308.06/53,479.50
6. Step 6: Final answer
   x = 129,263.85