Finding the Third Proportional to 250,204,258.50 and 521,117,721

Step by Step Solution

1. Step 1: Write the proportion equation
   250,204,258.50 : 521,117,721 = 521,117,721 : x
2. Step 2: Convert to fraction form
   250,204,258.50/521,117,721 = 521,117,721/x
3. Step 3: Cross multiply
   250,204,258.50x = 521,117,721 × 521,117,721
4. Step 4: Simplify right side
   250,204,258.50x = 271,563,679,140,233,856
5. Step 5: Solve for x
   x = 271,563,679,140,233,856/250,204,258.50
6. Step 6: Final answer
   x = 1,085,367,934.06