Finding the Third Proportional to 803,664 and 1,215,900

Step by Step Solution

1. Step 1: Write the proportion equation
   803,664 : 1,215,900 = 1,215,900 : x
2. Step 2: Convert to fraction form
   803,664/1,215,900 = 1,215,900/x
3. Step 3: Cross multiply
   803,664x = 1,215,900 × 1,215,900
4. Step 4: Simplify right side
   803,664x = 1,478,412,810,000
5. Step 5: Solve for x
   x = 1,478,412,810,000/803,664
6. Step 6: Final answer
   x = 1,839,590.69