Finding the Third Proportional to 321,393 and 705,832.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,393 : 705,832.50 = 705,832.50 : x
2. Step 2: Convert to fraction form
   321,393/705,832.50 = 705,832.50/x
3. Step 3: Cross multiply
   321,393x = 705,832.50 × 705,832.50
4. Step 4: Simplify right side
   321,393x = 498,199,518,056.25
5. Step 5: Solve for x
   x = 498,199,518,056.25/321,393
6. Step 6: Final answer
   x = 1,550,125.60