Finding the Third Proportional to 853,780 and 1,201,254

Step by Step Solution

1. Step 1: Write the proportion equation
   853,780 : 1,201,254 = 1,201,254 : x
2. Step 2: Convert to fraction form
   853,780/1,201,254 = 1,201,254/x
3. Step 3: Cross multiply
   853,780x = 1,201,254 × 1,201,254
4. Step 4: Simplify right side
   853,780x = 1,443,011,172,516
5. Step 5: Solve for x
   x = 1,443,011,172,516/853,780
6. Step 6: Final answer
   x = 1,690,144.03