Finding the Third Proportional to 690,498 and 1,059,804

Step by Step Solution

1. Step 1: Write the proportion equation
   690,498 : 1,059,804 = 1,059,804 : x
2. Step 2: Convert to fraction form
   690,498/1,059,804 = 1,059,804/x
3. Step 3: Cross multiply
   690,498x = 1,059,804 × 1,059,804
4. Step 4: Simplify right side
   690,498x = 1,123,184,518,416
5. Step 5: Solve for x
   x = 1,123,184,518,416/690,498
6. Step 6: Final answer
   x = 1,626,629.65