Finding the Third Proportional to 1,072,659 and 1,590,435

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072,659 : 1,590,435 = 1,590,435 : x
2. Step 2: Convert to fraction form
   1,072,659/1,590,435 = 1,590,435/x
3. Step 3: Cross multiply
   1,072,659x = 1,590,435 × 1,590,435
4. Step 4: Simplify right side
   1,072,659x = 2,529,483,489,225
5. Step 5: Solve for x
   x = 2,529,483,489,225/1,072,659
6. Step 6: Final answer
   x = 2,358,143.16