Finding the Third Proportional to 646,275 and 1,380,513

Step by Step Solution

1. Step 1: Write the proportion equation
   646,275 : 1,380,513 = 1,380,513 : x
2. Step 2: Convert to fraction form
   646,275/1,380,513 = 1,380,513/x
3. Step 3: Cross multiply
   646,275x = 1,380,513 × 1,380,513
4. Step 4: Simplify right side
   646,275x = 1,905,816,143,169
5. Step 5: Solve for x
   x = 1,905,816,143,169/646,275
6. Step 6: Final answer
   x = 2,948,924.44