Finding the Third Proportional to 911,521.50 and 1,987,057.50

Step by Step Solution

1. Step 1: Write the proportion equation
   911,521.50 : 1,987,057.50 = 1,987,057.50 : x
2. Step 2: Convert to fraction form
   911,521.50/1,987,057.50 = 1,987,057.50/x
3. Step 3: Cross multiply
   911,521.50x = 1,987,057.50 × 1,987,057.50
4. Step 4: Simplify right side
   911,521.50x = 3,948,397,508,306.25
5. Step 5: Solve for x
   x = 3,948,397,508,306.25/911,521.50
6. Step 6: Final answer
   x = 4,331,655.93