Finding the Third Proportional to 326,915 and 705,437.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,915 : 705,437.50 = 705,437.50 : x
2. Step 2: Convert to fraction form
   326,915/705,437.50 = 705,437.50/x
3. Step 3: Cross multiply
   326,915x = 705,437.50 × 705,437.50
4. Step 4: Simplify right side
   326,915x = 497,642,066,406.25
5. Step 5: Solve for x
   x = 497,642,066,406.25/326,915
6. Step 6: Final answer
   x = 1,522,236.87