Finding the Third Proportional to 374,820 and 803,208

Step by Step Solution

1. Step 1: Write the proportion equation
   374,820 : 803,208 = 803,208 : x
2. Step 2: Convert to fraction form
   374,820/803,208 = 803,208/x
3. Step 3: Cross multiply
   374,820x = 803,208 × 803,208
4. Step 4: Simplify right side
   374,820x = 645,143,091,264
5. Step 5: Solve for x
   x = 645,143,091,264/374,820
6. Step 6: Final answer
   x = 1,721,207.76