Finding the Third Proportional to 1,515,138 and 3,270,624

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,138 : 3,270,624 = 3,270,624 : x
2. Step 2: Convert to fraction form
   1,515,138/3,270,624 = 3,270,624/x
3. Step 3: Cross multiply
   1,515,138x = 3,270,624 × 3,270,624
4. Step 4: Simplify right side
   1,515,138x = 10,696,981,349,376
5. Step 5: Solve for x
   x = 10,696,981,349,376/1,515,138
6. Step 6: Final answer
   x = 7,060,070.67