Finding the Third Proportional to 641,410 and 1,384,516

Step by Step Solution

1. Step 1: Write the proportion equation
   641,410 : 1,384,516 = 1,384,516 : x
2. Step 2: Convert to fraction form
   641,410/1,384,516 = 1,384,516/x
3. Step 3: Cross multiply
   641,410x = 1,384,516 × 1,384,516
4. Step 4: Simplify right side
   641,410x = 1,916,884,554,256
5. Step 5: Solve for x
   x = 1,916,884,554,256/641,410
6. Step 6: Final answer
   x = 2,988,547.97