Finding the Third Proportional to 356,470 and 742,426

Step by Step Solution

1. Step 1: Write the proportion equation
   356,470 : 742,426 = 742,426 : x
2. Step 2: Convert to fraction form
   356,470/742,426 = 742,426/x
3. Step 3: Cross multiply
   356,470x = 742,426 × 742,426
4. Step 4: Simplify right side
   356,470x = 551,196,365,476
5. Step 5: Solve for x
   x = 551,196,365,476/356,470
6. Step 6: Final answer
   x = 1,546,262.98