Finding the Third Proportional to 1,339,920 and 2,920,356

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339,920 : 2,920,356 = 2,920,356 : x
2. Step 2: Convert to fraction form
   1,339,920/2,920,356 = 2,920,356/x
3. Step 3: Cross multiply
   1,339,920x = 2,920,356 × 2,920,356
4. Step 4: Simplify right side
   1,339,920x = 8,528,479,166,736
5. Step 5: Solve for x
   x = 8,528,479,166,736/1,339,920
6. Step 6: Final answer
   x = 6,364,916.69