Finding the Third Proportional to 340,085.25 and 742,338

Step by Step Solution

1. Step 1: Write the proportion equation
   340,085.25 : 742,338 = 742,338 : x
2. Step 2: Convert to fraction form
   340,085.25/742,338 = 742,338/x
3. Step 3: Cross multiply
   340,085.25x = 742,338 × 742,338
4. Step 4: Simplify right side
   340,085.25x = 551,065,706,244
5. Step 5: Solve for x
   x = 551,065,706,244/340,085.25
6. Step 6: Final answer
   x = 1,620,375.20