Finding the Third Proportional to 803,210 and 1,689,254

Step by Step Solution

1. Step 1: Write the proportion equation
   803,210 : 1,689,254 = 1,689,254 : x
2. Step 2: Convert to fraction form
   803,210/1,689,254 = 1,689,254/x
3. Step 3: Cross multiply
   803,210x = 1,689,254 × 1,689,254
4. Step 4: Simplify right side
   803,210x = 2,853,579,076,516
5. Step 5: Solve for x
   x = 2,853,579,076,516/803,210
6. Step 6: Final answer
   x = 3,552,718.56