Finding the Third Proportional to 690,498 and 1,428,948

Step by Step Solution

1. Step 1: Write the proportion equation
   690,498 : 1,428,948 = 1,428,948 : x
2. Step 2: Convert to fraction form
   690,498/1,428,948 = 1,428,948/x
3. Step 3: Cross multiply
   690,498x = 1,428,948 × 1,428,948
4. Step 4: Simplify right side
   690,498x = 2,041,892,386,704
5. Step 5: Solve for x
   x = 2,041,892,386,704/690,498
6. Step 6: Final answer
   x = 2,957,130.05