Finding the Third Proportional to 1,678,122 and 2,517,156

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678,122 : 2,517,156 = 2,517,156 : x
2. Step 2: Convert to fraction form
   1,678,122/2,517,156 = 2,517,156/x
3. Step 3: Cross multiply
   1,678,122x = 2,517,156 × 2,517,156
4. Step 4: Simplify right side
   1,678,122x = 6,336,074,328,336
5. Step 5: Solve for x
   x = 6,336,074,328,336/1,678,122
6. Step 6: Final answer
   x = 3,775,693.50