Finding the Third Proportional to 51,056.25 and 71,412.75

Step by Step Solution

1. Step 1: Write the proportion equation
   51,056.25 : 71,412.75 = 71,412.75 : x
2. Step 2: Convert to fraction form
   51,056.25/71,412.75 = 71,412.75/x
3. Step 3: Cross multiply
   51,056.25x = 71,412.75 × 71,412.75
4. Step 4: Simplify right side
   51,056.25x = 5,099,780,862.56
5. Step 5: Solve for x
   x = 5,099,780,862.56/51,056.25
6. Step 6: Final answer
   x = 99,885.54