Finding the Third Proportional to 2,172,570 and 3,286,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,570 : 3,286,811.50 = 3,286,811.50 : x
2. Step 2: Convert to fraction form
   2,172,570/3,286,811.50 = 3,286,811.50/x
3. Step 3: Cross multiply
   2,172,570x = 3,286,811.50 × 3,286,811.50
4. Step 4: Simplify right side
   2,172,570x = 10,803,129,836,532.25
5. Step 5: Solve for x
   x = 10,803,129,836,532.25/2,172,570
6. Step 6: Final answer
   x = 4,972,511.74