Finding the Third Proportional to 56,478.75 and 84,725.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,478.75 : 84,725.25 = 84,725.25 : x
2. Step 2: Convert to fraction form
   56,478.75/84,725.25 = 84,725.25/x
3. Step 3: Cross multiply
   56,478.75x = 84,725.25 × 84,725.25
4. Step 4: Simplify right side
   56,478.75x = 7,178,367,987.56
5. Step 5: Solve for x
   x = 7,178,367,987.56/56,478.75
6. Step 6: Final answer
   x = 127,098.56