Finding the Third Proportional to 1,201,716 and 1,690,308

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201,716 : 1,690,308 = 1,690,308 : x
2. Step 2: Convert to fraction form
   1,201,716/1,690,308 = 1,690,308/x
3. Step 3: Cross multiply
   1,201,716x = 1,690,308 × 1,690,308
4. Step 4: Simplify right side
   1,201,716x = 2,857,141,134,864
5. Step 5: Solve for x
   x = 2,857,141,134,864/1,201,716
6. Step 6: Final answer
   x = 2,377,551.05