Finding the Third Proportional to 56,442.50 and 123,379.63

Step by Step Solution

1. Step 1: Write the proportion equation
   56,442.50 : 123,379.63 = 123,379.63 : x
2. Step 2: Convert to fraction form
   56,442.50/123,379.63 = 123,379.63/x
3. Step 3: Cross multiply
   56,442.50x = 123,379.63 × 123,379.63
4. Step 4: Simplify right side
   56,442.50x = 15,222,531,865.14
5. Step 5: Solve for x
   x = 15,222,531,865.14/56,442.50
6. Step 6: Final answer
   x = 269,699.82