Finding the Third Proportional to 2,586,330 and 5,620,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,330 : 5,620,333.50 = 5,620,333.50 : x
2. Step 2: Convert to fraction form
   2,586,330/5,620,333.50 = 5,620,333.50/x
3. Step 3: Cross multiply
   2,586,330x = 5,620,333.50 × 5,620,333.50
4. Step 4: Simplify right side
   2,586,330x = 31,588,148,651,222.25
5. Step 5: Solve for x
   x = 31,588,148,651,222.25/2,586,330
6. Step 6: Final answer
   x = 12,213,502.78