Finding the Third Proportional to 1,405,368 and 3,125,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405,368 : 3,125,172 = 3,125,172 : x
2. Step 2: Convert to fraction form
   1,405,368/3,125,172 = 3,125,172/x
3. Step 3: Cross multiply
   1,405,368x = 3,125,172 × 3,125,172
4. Step 4: Simplify right side
   1,405,368x = 9,766,700,029,584
5. Step 5: Solve for x
   x = 9,766,700,029,584/1,405,368
6. Step 6: Final answer
   x = 6,949,567.68