Finding the Third Proportional to 56,119.50 and 86,254.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,119.50 : 86,254.50 = 86,254.50 : x
2. Step 2: Convert to fraction form
   56,119.50/86,254.50 = 86,254.50/x
3. Step 3: Cross multiply
   56,119.50x = 86,254.50 × 86,254.50
4. Step 4: Simplify right side
   56,119.50x = 7,439,838,770.25
5. Step 5: Solve for x
   x = 7,439,838,770.25/56,119.50
6. Step 6: Final answer
   x = 132,571.37