Finding the Third Proportional to 256,339.50 and 552,123

Step by Step Solution

1. Step 1: Write the proportion equation
   256,339.50 : 552,123 = 552,123 : x
2. Step 2: Convert to fraction form
   256,339.50/552,123 = 552,123/x
3. Step 3: Cross multiply
   256,339.50x = 552,123 × 552,123
4. Step 4: Simplify right side
   256,339.50x = 304,839,807,129
5. Step 5: Solve for x
   x = 304,839,807,129/256,339.50
6. Step 6: Final answer
   x = 1,189,203.41