Finding the Third Proportional to 679,969.50 and 1,490,724

Step by Step Solution

1. Step 1: Write the proportion equation
   679,969.50 : 1,490,724 = 1,490,724 : x
2. Step 2: Convert to fraction form
   679,969.50/1,490,724 = 1,490,724/x
3. Step 3: Cross multiply
   679,969.50x = 1,490,724 × 1,490,724
4. Step 4: Simplify right side
   679,969.50x = 2,222,258,044,176
5. Step 5: Solve for x
   x = 2,222,258,044,176/679,969.50
6. Step 6: Final answer
   x = 3,268,173.12