Finding the Third Proportional to 319,900 and 700,064

Step by Step Solution

1. Step 1: Write the proportion equation
   319,900 : 700,064 = 700,064 : x
2. Step 2: Convert to fraction form
   319,900/700,064 = 700,064/x
3. Step 3: Cross multiply
   319,900x = 700,064 × 700,064
4. Step 4: Simplify right side
   319,900x = 490,089,604,096
5. Step 5: Solve for x
   x = 490,089,604,096/319,900
6. Step 6: Final answer
   x = 1,532,008.77