Finding the Third Proportional to 340,072.50 and 742,314

Step by Step Solution

1. Step 1: Write the proportion equation
   340,072.50 : 742,314 = 742,314 : x
2. Step 2: Convert to fraction form
   340,072.50/742,314 = 742,314/x
3. Step 3: Cross multiply
   340,072.50x = 742,314 × 742,314
4. Step 4: Simplify right side
   340,072.50x = 551,030,074,596
5. Step 5: Solve for x
   x = 551,030,074,596/340,072.50
6. Step 6: Final answer
   x = 1,620,331.18