Finding the Third Proportional to 56,353.50 and 87,756.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,353.50 : 87,756.75 = 87,756.75 : x
2. Step 2: Convert to fraction form
   56,353.50/87,756.75 = 87,756.75/x
3. Step 3: Cross multiply
   56,353.50x = 87,756.75 × 87,756.75
4. Step 4: Simplify right side
   56,353.50x = 7,701,247,170.56
5. Step 5: Solve for x
   x = 7,701,247,170.56/56,353.50
6. Step 6: Final answer
   x = 136,659.61