Finding the Third Proportional to 56,405.53 and 84,620.53

Step by Step Solution

1. Step 1: Write the proportion equation
   56,405.53 : 84,620.53 = 84,620.53 : x
2. Step 2: Convert to fraction form
   56,405.53/84,620.53 = 84,620.53/x
3. Step 3: Cross multiply
   56,405.53x = 84,620.53 × 84,620.53
4. Step 4: Simplify right side
   56,405.53x = 7,160,634,309.03
5. Step 5: Solve for x
   x = 7,160,634,309.03/56,405.53
6. Step 6: Final answer
   x = 126,949.15