Finding the Third Proportional to 616,591 and 1,345,231

Step by Step Solution

1. Step 1: Write the proportion equation
   616,591 : 1,345,231 = 1,345,231 : x
2. Step 2: Convert to fraction form
   616,591/1,345,231 = 1,345,231/x
3. Step 3: Cross multiply
   616,591x = 1,345,231 × 1,345,231
4. Step 4: Simplify right side
   616,591x = 1,809,646,443,361
5. Step 5: Solve for x
   x = 1,809,646,443,361/616,591
6. Step 6: Final answer
   x = 2,934,921.92