Finding the Third Proportional to 56,513.25 and 85,497.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,513.25 : 85,497.75 = 85,497.75 : x
2. Step 2: Convert to fraction form
   56,513.25/85,497.75 = 85,497.75/x
3. Step 3: Cross multiply
   56,513.25x = 85,497.75 × 85,497.75
4. Step 4: Simplify right side
   56,513.25x = 7,309,865,255.06
5. Step 5: Solve for x
   x = 7,309,865,255.06/56,513.25
6. Step 6: Final answer
   x = 129,347.81