Finding the Third Proportional to 602,826.75 and 820,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   602,826.75 : 820,921.50 = 820,921.50 : x
2. Step 2: Convert to fraction form
   602,826.75/820,921.50 = 820,921.50/x
3. Step 3: Cross multiply
   602,826.75x = 820,921.50 × 820,921.50
4. Step 4: Simplify right side
   602,826.75x = 673,912,109,162.25
5. Step 5: Solve for x
   x = 673,912,109,162.25/602,826.75
6. Step 6: Final answer
   x = 1,117,920.05