Finding the Third Proportional to 787,817 and 1,147,279

Step by Step Solution

1. Step 1: Write the proportion equation
   787,817 : 1,147,279 = 1,147,279 : x
2. Step 2: Convert to fraction form
   787,817/1,147,279 = 1,147,279/x
3. Step 3: Cross multiply
   787,817x = 1,147,279 × 1,147,279
4. Step 4: Simplify right side
   787,817x = 1,316,249,103,841
5. Step 5: Solve for x
   x = 1,316,249,103,841/787,817
6. Step 6: Final answer
   x = 1,670,754.89