Finding the Third Proportional to 479,121 and 718,693.50

Step by Step Solution

1. Step 1: Write the proportion equation
   479,121 : 718,693.50 = 718,693.50 : x
2. Step 2: Convert to fraction form
   479,121/718,693.50 = 718,693.50/x
3. Step 3: Cross multiply
   479,121x = 718,693.50 × 718,693.50
4. Step 4: Simplify right side
   479,121x = 516,520,346,942.25
5. Step 5: Solve for x
   x = 516,520,346,942.25/479,121
6. Step 6: Final answer
   x = 1,078,058.25