Finding the Third Proportional to 356,420 and 742,326.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,420 : 742,326.50 = 742,326.50 : x
2. Step 2: Convert to fraction form
   356,420/742,326.50 = 742,326.50/x
3. Step 3: Cross multiply
   356,420x = 742,326.50 × 742,326.50
4. Step 4: Simplify right side
   356,420x = 551,048,632,602.25
5. Step 5: Solve for x
   x = 551,048,632,602.25/356,420
6. Step 6: Final answer
   x = 1,546,065.41