Finding the Third Proportional to 1,072,664 and 1,590,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072,664 : 1,590,440 = 1,590,440 : x
2. Step 2: Convert to fraction form
   1,072,664/1,590,440 = 1,590,440/x
3. Step 3: Cross multiply
   1,072,664x = 1,590,440 × 1,590,440
4. Step 4: Simplify right side
   1,072,664x = 2,529,499,393,600
5. Step 5: Solve for x
   x = 2,529,499,393,600/1,072,664
6. Step 6: Final answer
   x = 2,358,147.00