Finding the Third Proportional to 56,408.48 and 123,887.06

Step by Step Solution

1. Step 1: Write the proportion equation
   56,408.48 : 123,887.06 = 123,887.06 : x
2. Step 2: Convert to fraction form
   56,408.48/123,887.06 = 123,887.06/x
3. Step 3: Cross multiply
   56,408.48x = 123,887.06 × 123,887.06
4. Step 4: Simplify right side
   56,408.48x = 15,348,004,254.88
5. Step 5: Solve for x
   x = 15,348,004,254.88/56,408.48
6. Step 6: Final answer
   x = 272,086.80