Finding the Third Proportional to 321,880.50 and 706,801.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,880.50 : 706,801.50 = 706,801.50 : x
2. Step 2: Convert to fraction form
   321,880.50/706,801.50 = 706,801.50/x
3. Step 3: Cross multiply
   321,880.50x = 706,801.50 × 706,801.50
4. Step 4: Simplify right side
   321,880.50x = 499,568,360,402.25
5. Step 5: Solve for x
   x = 499,568,360,402.25/321,880.50
6. Step 6: Final answer
   x = 1,552,030.52