Finding the Third Proportional to 911,720 and 1,983,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   911,720 : 1,983,981.50 = 1,983,981.50 : x
2. Step 2: Convert to fraction form
   911,720/1,983,981.50 = 1,983,981.50/x
3. Step 3: Cross multiply
   911,720x = 1,983,981.50 × 1,983,981.50
4. Step 4: Simplify right side
   911,720x = 3,936,182,592,342.25
5. Step 5: Solve for x
   x = 3,936,182,592,342.25/911,720
6. Step 6: Final answer
   x = 4,317,315.18