Finding the Third Proportional to 1,216,359 and 1,865,751

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,359 : 1,865,751 = 1,865,751 : x
2. Step 2: Convert to fraction form
   1,216,359/1,865,751 = 1,865,751/x
3. Step 3: Cross multiply
   1,216,359x = 1,865,751 × 1,865,751
4. Step 4: Simplify right side
   1,216,359x = 3,481,026,794,001
5. Step 5: Solve for x
   x = 3,481,026,794,001/1,216,359
6. Step 6: Final answer
   x = 2,861,841.61