Finding the Third Proportional to 56,079.50 and 86,198.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,079.50 : 86,198.50 = 86,198.50 : x
2. Step 2: Convert to fraction form
   56,079.50/86,198.50 = 86,198.50/x
3. Step 3: Cross multiply
   56,079.50x = 86,198.50 × 86,198.50
4. Step 4: Simplify right side
   56,079.50x = 7,430,181,402.25
5. Step 5: Solve for x
   x = 7,430,181,402.25/56,079.50
6. Step 6: Final answer
   x = 132,493.72