Finding the Third Proportional to 53,338.50 and 80,412.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,338.50 : 80,412.75 = 80,412.75 : x
2. Step 2: Convert to fraction form
   53,338.50/80,412.75 = 80,412.75/x
3. Step 3: Cross multiply
   53,338.50x = 80,412.75 × 80,412.75
4. Step 4: Simplify right side
   53,338.50x = 6,466,210,362.56
5. Step 5: Solve for x
   x = 6,466,210,362.56/53,338.50
6. Step 6: Final answer
   x = 121,229.70