Finding the Third Proportional to 863,958 and 1,216,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   863,958 : 1,216,111.50 = 1,216,111.50 : x
2. Step 2: Convert to fraction form
   863,958/1,216,111.50 = 1,216,111.50/x
3. Step 3: Cross multiply
   863,958x = 1,216,111.50 × 1,216,111.50
4. Step 4: Simplify right side
   863,958x = 1,478,927,180,432.25
5. Step 5: Solve for x
   x = 1,478,927,180,432.25/863,958
6. Step 6: Final answer
   x = 1,711,804.49