Finding the Third Proportional to 155,541 and 326,743.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,541 : 326,743.50 = 326,743.50 : x
2. Step 2: Convert to fraction form
   155,541/326,743.50 = 326,743.50/x
3. Step 3: Cross multiply
   155,541x = 326,743.50 × 326,743.50
4. Step 4: Simplify right side
   155,541x = 106,761,314,792.25
5. Step 5: Solve for x
   x = 106,761,314,792.25/155,541
6. Step 6: Final answer
   x = 686,386.96