Finding the Third Proportional to 1,248,786 and 1,859,355

Step by Step Solution

1. Step 1: Write the proportion equation
   1,248,786 : 1,859,355 = 1,859,355 : x
2. Step 2: Convert to fraction form
   1,248,786/1,859,355 = 1,859,355/x
3. Step 3: Cross multiply
   1,248,786x = 1,859,355 × 1,859,355
4. Step 4: Simplify right side
   1,248,786x = 3,457,201,016,025
5. Step 5: Solve for x
   x = 3,457,201,016,025/1,248,786
6. Step 6: Final answer
   x = 2,768,449.53