Finding the Third Proportional to 1,243,912 and 2,613,156

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,912 : 2,613,156 = 2,613,156 : x
2. Step 2: Convert to fraction form
   1,243,912/2,613,156 = 2,613,156/x
3. Step 3: Cross multiply
   1,243,912x = 2,613,156 × 2,613,156
4. Step 4: Simplify right side
   1,243,912x = 6,828,584,280,336
5. Step 5: Solve for x
   x = 6,828,584,280,336/1,243,912
6. Step 6: Final answer
   x = 5,489,603.99