Finding the Third Proportional to 200,359 and 423,074

Step by Step Solution

1. Step 1: Write the proportion equation
   200,359 : 423,074 = 423,074 : x
2. Step 2: Convert to fraction form
   200,359/423,074 = 423,074/x
3. Step 3: Cross multiply
   200,359x = 423,074 × 423,074
4. Step 4: Simplify right side
   200,359x = 178,991,609,476
5. Step 5: Solve for x
   x = 178,991,609,476/200,359
6. Step 6: Final answer
   x = 893,354.48