Finding the Third Proportional to 321,462 and 698,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,462 : 698,287.50 = 698,287.50 : x
2. Step 2: Convert to fraction form
   321,462/698,287.50 = 698,287.50/x
3. Step 3: Cross multiply
   321,462x = 698,287.50 × 698,287.50
4. Step 4: Simplify right side
   321,462x = 487,605,432,656.25
5. Step 5: Solve for x
   x = 487,605,432,656.25/321,462
6. Step 6: Final answer
   x = 1,516,836.93