Finding the Third Proportional to 56,416.50 and 123,903

Step by Step Solution

1. Step 1: Write the proportion equation
   56,416.50 : 123,903 = 123,903 : x
2. Step 2: Convert to fraction form
   56,416.50/123,903 = 123,903/x
3. Step 3: Cross multiply
   56,416.50x = 123,903 × 123,903
4. Step 4: Simplify right side
   56,416.50x = 15,351,953,409
5. Step 5: Solve for x
   x = 15,351,953,409/56,416.50
6. Step 6: Final answer
   x = 272,118.15