Finding the Third Proportional to 2,105,689.50 and 4,310,978.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,689.50 : 4,310,978.63 = 4,310,978.63 : x
2. Step 2: Convert to fraction form
   2,105,689.50/4,310,978.63 = 4,310,978.63/x
3. Step 3: Cross multiply
   2,105,689.50x = 4,310,978.63 × 4,310,978.63
4. Step 4: Simplify right side
   2,105,689.50x = 18,584,536,705,206.89
5. Step 5: Solve for x
   x = 18,584,536,705,206.89/2,105,689.50
6. Step 6: Final answer
   x = 8,825,867.59