Finding the Third Proportional to 1,243,410 and 1,857,412

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,410 : 1,857,412 = 1,857,412 : x
2. Step 2: Convert to fraction form
   1,243,410/1,857,412 = 1,857,412/x
3. Step 3: Cross multiply
   1,243,410x = 1,857,412 × 1,857,412
4. Step 4: Simplify right side
   1,243,410x = 3,449,979,337,744
5. Step 5: Solve for x
   x = 3,449,979,337,744/1,243,410
6. Step 6: Final answer
   x = 2,774,611.22