Finding the Third Proportional to 611,359.50 and 1,438,503

Step by Step Solution

1. Step 1: Write the proportion equation
   611,359.50 : 1,438,503 = 1,438,503 : x
2. Step 2: Convert to fraction form
   611,359.50/1,438,503 = 1,438,503/x
3. Step 3: Cross multiply
   611,359.50x = 1,438,503 × 1,438,503
4. Step 4: Simplify right side
   611,359.50x = 2,069,290,881,009
5. Step 5: Solve for x
   x = 2,069,290,881,009/611,359.50
6. Step 6: Final answer
   x = 3,384,736.61