Finding the Third Proportional to 1,216,357 and 1,865,748

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,357 : 1,865,748 = 1,865,748 : x
2. Step 2: Convert to fraction form
   1,216,357/1,865,748 = 1,865,748/x
3. Step 3: Cross multiply
   1,216,357x = 1,865,748 × 1,865,748
4. Step 4: Simplify right side
   1,216,357x = 3,481,015,599,504
5. Step 5: Solve for x
   x = 3,481,015,599,504/1,216,357
6. Step 6: Final answer
   x = 2,861,837.11