Finding the Third Proportional to 790,863 and 1,225,620

Step by Step Solution

1. Step 1: Write the proportion equation
   790,863 : 1,225,620 = 1,225,620 : x
2. Step 2: Convert to fraction form
   790,863/1,225,620 = 1,225,620/x
3. Step 3: Cross multiply
   790,863x = 1,225,620 × 1,225,620
4. Step 4: Simplify right side
   790,863x = 1,502,144,384,400
5. Step 5: Solve for x
   x = 1,502,144,384,400/790,863
6. Step 6: Final answer
   x = 1,899,373.70